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57997544 = 2311659063
BaseRepresentation
bin1101110100111…
…1100011101000
311001010120200012
43131033203220
5104321410134
65431031052
71302654023
oct335174350
9131116605
1057997544
112a813460
121750b488
13c028697
1479ba1ba
1551596ce
hex374f8e8

57997544 has 16 divisors (see below), whose sum is σ = 118631520. Its totient is φ = 26362480.

The previous prime is 57997517. The next prime is 57997573. The reversal of 57997544 is 44579975.

It is a super-2 number, since 2×579975442 = 6727430220063872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57997492 and 57997501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329444 + ... + 329619.

It is an arithmetic number, because the mean of its divisors is an integer number (7414470).

Almost surely, 257997544 is an apocalyptic number.

It is an amenable number.

57997544 is an abundant number, since it is smaller than the sum of its proper divisors (60633976).

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

57997544 is a wasteful number, since it uses less digits than its factorization.

57997544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659080 (or 659076 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 50.

The square root of 57997544 is about 7615.6118598574. The cubic root of 57997544 is about 387.0822002655.

Subtracting from 57997544 its reverse (44579975), we obtain a square (13417569 = 36632).

The spelling of 57997544 in words is "fifty-seven million, nine hundred ninety-seven thousand, five hundred forty-four".

Divisors: 1 2 4 8 11 22 44 88 659063 1318126 2636252 5272504 7249693 14499386 28998772 57997544