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57298871087 = 330717326541
BaseRepresentation
bin110101010111010001…
…110110001100101111
312110220020221020110122
4311113101312030233
51414322002333322
642153413355155
74065630240203
oct652721661457
9173806836418
1057298871087
112233379aa17
12b131338abb
135531c69963
142ab7c48b03
151755548442
hexd5747632f

57298871087 has 4 divisors (see below), whose sum is σ = 57316200936. Its totient is φ = 57281541240.

The previous prime is 57298871053. The next prime is 57298871107. The reversal of 57298871087 is 78017889275.

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 57298871087 - 212 = 57298866991 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 (57298871027) 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, 8659964 + ... + 8666577.

It is an arithmetic number, because the mean of its divisors is an integer number (14329050234).

Almost surely, 257298871087 is an apocalyptic number.

57298871087 is a deficient number, since it is larger than the sum of its proper divisors (17329849).

57298871087 is a wasteful number, since it uses less digits than its factorization.

57298871087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17329848.

The product of its (nonzero) digits is 15805440, while the sum is 62.

The spelling of 57298871087 in words is "fifty-seven billion, two hundred ninety-eight million, eight hundred seventy-one thousand, eighty-seven".

Divisors: 1 3307 17326541 57298871087