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57297863 = 719430811
BaseRepresentation
bin1101101010010…
…0101111000111
310222211000220002
43122210233013
5104132012423
65404031515
71264011110
oct332445707
9128730802
1057297863
112a385807
121723259b
13bb4207c
147877207
15506c228
hex36a4bc7

57297863 has 8 divisors (see below), whose sum is σ = 68929920. Its totient is φ = 46527480.

The previous prime is 57297859. The next prime is 57297883. The reversal of 57297863 is 36879275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57297863 - 22 = 57297859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57297833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215273 + ... + 215538.

It is an arithmetic number, because the mean of its divisors is an integer number (8616240).

Almost surely, 257297863 is an apocalyptic number.

57297863 is a deficient number, since it is larger than the sum of its proper divisors (11632057).

57297863 is a wasteful number, since it uses less digits than its factorization.

57297863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430837.

The product of its digits is 635040, while the sum is 47.

The square root of 57297863 is about 7569.5351904856. The cubic root of 57297863 is about 385.5193149386.

The spelling of 57297863 in words is "fifty-seven million, two hundred ninety-seven thousand, eight hundred sixty-three".

Divisors: 1 7 19 133 430811 3015677 8185409 57297863