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57391852 = 22712371657
BaseRepresentation
bin1101101011101…
…1101011101100
310222222210211011
43122323223230
5104143014402
65410035004
71264552120
oct332735354
9128883734
1057391852
112a43a391
1217278a64
13bb75a9b
14789d580
155089ed7
hex36bbaec

57391852 has 24 divisors (see below), whose sum is σ = 114945824. Its totient is φ = 24561792.

The previous prime is 57391843. The next prime is 57391853. The reversal of 57391852 is 25819375.

It is not an unprimeable number, because it can be changed into a prime (57391853) 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 7 ways as a sum of consecutive naturals, for example, 33808 + ... + 35464.

Almost surely, 257391852 is an apocalyptic number.

It is an amenable number.

57391852 is an abundant number, since it is smaller than the sum of its proper divisors (57553972).

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

57391852 is a wasteful number, since it uses less digits than its factorization.

57391852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2903 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 57391852 is about 7575.7410198607. The cubic root of 57391852 is about 385.7299963292.

The spelling of 57391852 in words is "fifty-seven million, three hundred ninety-one thousand, eight hundred fifty-two".

Divisors: 1 2 4 7 14 28 1237 1657 2474 3314 4948 6628 8659 11599 17318 23198 34636 46396 2049709 4099418 8198836 14347963 28695926 57391852