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57298769 = 115208979
BaseRepresentation
bin1101101010010…
…0111101010001
310222211002010122
43122210331101
5104132030034
65404040025
71264013543
oct332447521
9128732118
1057298769
112a386460
1217233015
13bb425c8
147877693
15506c62e
hex36a4f51

57298769 has 4 divisors (see below), whose sum is σ = 62507760. Its totient is φ = 52089780.

The previous prime is 57298733. The next prime is 57298783. The reversal of 57298769 is 96789275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57298769 - 28 = 57298513 is a prime.

It is a super-2 number, since 2×572987692 = 6566297857830722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57298769.

It is not an unprimeable number, because it can be changed into a prime (57298729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2604479 + ... + 2604500.

It is an arithmetic number, because the mean of its divisors is an integer number (15626940).

Almost surely, 257298769 is an apocalyptic number.

It is an amenable number.

57298769 is a deficient number, since it is larger than the sum of its proper divisors (5208991).

57298769 is a wasteful number, since it uses less digits than its factorization.

57298769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208990.

The product of its digits is 1905120, while the sum is 53.

The square root of 57298769 is about 7569.5950354031. The cubic root of 57298769 is about 385.5213468855.

The spelling of 57298769 in words is "fifty-seven million, two hundred ninety-eight thousand, seven hundred sixty-nine".

Divisors: 1 11 5208979 57298769