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57212447590 = 257577557787
BaseRepresentation
bin110101010010001000…
…001010101101100110
312110200020022110201101
4311102020022231212
51414132341310330
642141045150314
74063530531514
oct652210125546
9173606273641
1057212447590
1122299a31741
12b1083bb39a
13551a09a8ac
142aaa58d4b4
15174cb764ca
hexd5220ab66

57212447590 has 16 divisors (see below), whose sum is σ = 103118459472. Its totient is φ = 22854744864.

The previous prime is 57212447587. The next prime is 57212447623. The reversal of 57212447590 is 9574421275.

It is a self number, because there is not a number n which added to its sum of digits gives 57212447590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3771324 + ... + 3786463.

It is an arithmetic number, because the mean of its divisors is an integer number (6444903717).

Almost surely, 257212447590 is an apocalyptic number.

57212447590 is a deficient number, since it is larger than the sum of its proper divisors (45906011882).

57212447590 is a wasteful number, since it uses less digits than its factorization.

57212447590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558551.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 57212447590 in words is "fifty-seven billion, two hundred twelve million, four hundred forty-seven thousand, five hundred ninety".

Divisors: 1 2 5 10 757 1514 3785 7570 7557787 15115574 37788935 75577870 5721244759 11442489518 28606223795 57212447590