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57025000 = 23552281
BaseRepresentation
bin1101100110001…
…0000111101000
310222022011121001
43121202013220
5104044300000
65354124344
71261463434
oct331420750
9128264531
1057025000
112a2097aa
12171206b4
13ba77b06
1478059c4
15501646a
hex36621e8

57025000 has 48 divisors (see below), whose sum is σ = 133702380. Its totient is φ = 22800000.

The previous prime is 57024997. The next prime is 57025019. The reversal of 57025000 is 52075.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5098564 + 51926436 = 2258^2 + 7206^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23860 + ... + 26140.

Almost surely, 257025000 is an apocalyptic number.

57025000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66851190).

57025000 is an abundant number, since it is smaller than the sum of its proper divisors (76677380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57025000 is an equidigital number, since it uses as much as digits as its factorization.

57025000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312 (or 2288 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 57025000 is about 7551.4899192146. The cubic root of 57025000 is about 384.9063695403.

Adding to 57025000 its reverse (52075), we get a palindrome (57077075).

The spelling of 57025000 in words is "fifty-seven million, twenty-five thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 625 1000 1250 2281 2500 3125 4562 5000 6250 9124 11405 12500 18248 22810 25000 45620 57025 91240 114050 228100 285125 456200 570250 1140500 1425625 2281000 2851250 5702500 7128125 11405000 14256250 28512500 57025000