Search a number
-
+
57542825 = 526197389
BaseRepresentation
bin1101101110000…
…0100010101001
311000021110220202
43123200202221
5104212332300
65413201545
71266051224
oct333404251
9130243822
1057542825
112a53285a
12173302b5
13bbc9712
1478dc5bb
1550b9ad5
hex36e08a9

57542825 has 24 divisors (see below), whose sum is σ = 73458840. Its totient is φ = 44697600.

The previous prime is 57542819. The next prime is 57542827. The reversal of 57542825 is 52824575.

It can be written as a sum of positive squares in 12 ways, for example, as 40806544 + 16736281 = 6388^2 + 4091^2 .

It is not a de Polignac number, because 57542825 - 24 = 57542809 is a prime.

It is a super-2 number, since 2×575428252 = 6622353417961250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57542827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147731 + ... + 148119.

It is an arithmetic number, because the mean of its divisors is an integer number (3060785).

Almost surely, 257542825 is an apocalyptic number.

It is an amenable number.

57542825 is a deficient number, since it is larger than the sum of its proper divisors (15916015).

57542825 is a wasteful number, since it uses less digits than its factorization.

57542825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 552 counting only the distinct ones).

The product of its digits is 112000, while the sum is 38.

The square root of 57542825 is about 7585.6987153459. The cubic root of 57542825 is about 386.0679294661.

The spelling of 57542825 in words is "fifty-seven million, five hundred forty-two thousand, eight hundred twenty-five".

Divisors: 1 5 25 61 97 305 389 485 1525 1945 2425 5917 9725 23729 29585 37733 118645 147925 188665 593225 943325 2301713 11508565 57542825