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57124413 = 3331139491
BaseRepresentation
bin1101100111101…
…0011000111101
310222111012222000
43121322120331
5104110440123
65400212513
71262356323
oct331723075
9128435860
1057124413
112a277465
121716a139
13bab1138
14782dd13
155035b43
hex367a63d

57124413 has 32 divisors (see below), whose sum is σ = 88166400. Its totient is φ = 36514800.

The previous prime is 57124409. The next prime is 57124421. The reversal of 57124413 is 31442175.

It is not a de Polignac number, because 57124413 - 22 = 57124409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57124423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116098 + ... + 116588.

It is an arithmetic number, because the mean of its divisors is an integer number (2755200).

Almost surely, 257124413 is an apocalyptic number.

It is an amenable number.

57124413 is a deficient number, since it is larger than the sum of its proper divisors (31041987).

57124413 is a wasteful number, since it uses less digits than its factorization.

57124413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 664 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 57124413 is about 7558.0693963472. The cubic root of 57124413 is about 385.1299117441.

Adding to 57124413 its reverse (31442175), we get a palindrome (88566588).

The spelling of 57124413 in words is "fifty-seven million, one hundred twenty-four thousand, four hundred thirteen".

Divisors: 1 3 9 27 31 93 139 279 417 491 837 1251 1473 3753 4309 4419 12927 13257 15221 38781 45663 68249 116343 136989 204747 410967 614241 1842723 2115719 6347157 19041471 57124413