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57750133 = 78250019
BaseRepresentation
bin1101110001001…
…1001001110101
311000200000021211
43130103021311
5104241001013
65421441421
71300603510
oct334231165
9130600254
1057750133
112a664591
1217410271
13bc6cb9c
147953d77
15510b23d
hex3713275

57750133 has 4 divisors (see below), whose sum is σ = 66000160. Its totient is φ = 49500108.

The previous prime is 57750113. The next prime is 57750137. The reversal of 57750133 is 33105775.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57750133 - 217 = 57619061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57750095 and 57750104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57750137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125003 + ... + 4125016.

It is an arithmetic number, because the mean of its divisors is an integer number (16500040).

Almost surely, 257750133 is an apocalyptic number.

It is an amenable number.

57750133 is a deficient number, since it is larger than the sum of its proper divisors (8250027).

57750133 is an equidigital number, since it uses as much as digits as its factorization.

57750133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250026.

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 57750133 is about 7599.3508275378. The cubic root of 57750133 is about 386.5309993562.

The spelling of 57750133 in words is "fifty-seven million, seven hundred fifty thousand, one hundred thirty-three".

Divisors: 1 7 8250019 57750133