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57052499 = 78150357
BaseRepresentation
bin1101100110100…
…0110101010011
310222100120022112
43121220311103
5104101134444
65354455535
71261636550
oct331506523
9128316275
1057052499
112a228429
12171345ab
13ba8749a
147811a27
15501e69e
hex3668d53

57052499 has 4 divisors (see below), whose sum is σ = 65202864. Its totient is φ = 48902136.

The previous prime is 57052487. The next prime is 57052519. The reversal of 57052499 is 99425075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57052499 - 212 = 57048403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57052399) 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, 4075172 + ... + 4075185.

It is an arithmetic number, because the mean of its divisors is an integer number (16300716).

Almost surely, 257052499 is an apocalyptic number.

57052499 is a deficient number, since it is larger than the sum of its proper divisors (8150365).

57052499 is an equidigital number, since it uses as much as digits as its factorization.

57052499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150364.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 57052499 is about 7553.3104662790. The cubic root of 57052499 is about 384.9682303576.

The spelling of 57052499 in words is "fifty-seven million, fifty-two thousand, four hundred ninety-nine".

Divisors: 1 7 8150357 57052499