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57244831 = 717228297
BaseRepresentation
bin1101101001011…
…1110010011111
310222201100010221
43122113302133
5104123313311
65402542211
71263400360
oct332276237
9128640127
1057244831
112a349986
1217207967
13bb23ba7
147861b67
15505b671
hex3697c9f

57244831 has 12 divisors (see below), whose sum is σ = 69499888. Its totient is φ = 46179072.

The previous prime is 57244829. The next prime is 57244849. The reversal of 57244831 is 13844275.

It is not a de Polignac number, because 57244831 - 21 = 57244829 is a prime.

It is a super-2 number, since 2×572448312 = 6553941352437122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57244871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12126 + ... + 16171.

Almost surely, 257244831 is an apocalyptic number.

57244831 is a deficient number, since it is larger than the sum of its proper divisors (12255057).

57244831 is a wasteful number, since it uses less digits than its factorization.

57244831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338 (or 28321 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 57244831 is about 7566.0313903658. The cubic root of 57244831 is about 385.4003391742.

The spelling of 57244831 in words is "fifty-seven million, two hundred forty-four thousand, eight hundred thirty-one".

Divisors: 1 7 17 119 289 2023 28297 198079 481049 3367343 8177833 57244831