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57663087 = 319221029
BaseRepresentation
bin1101101111110…
…1111001101111
311000111120212220
43123331321233
5104230204322
65415530423
71300061646
oct333757157
9130446786
1057663087
112a605149
1217389a13
13bc3c391
14793035d
1550e055c
hex36fde6f

57663087 has 4 divisors (see below), whose sum is σ = 76884120. Its totient is φ = 38442056.

The previous prime is 57663079. The next prime is 57663101. The reversal of 57663087 is 78036675.

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 57663087 - 23 = 57663079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57663037) 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, 9610512 + ... + 9610517.

It is an arithmetic number, because the mean of its divisors is an integer number (19221030).

Almost surely, 257663087 is an apocalyptic number.

57663087 is a deficient number, since it is larger than the sum of its proper divisors (19221033).

57663087 is a wasteful number, since it uses less digits than its factorization.

57663087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19221032.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 57663087 is about 7593.6214680480. The cubic root of 57663087 is about 386.3366973722.

The spelling of 57663087 in words is "fifty-seven million, six hundred sixty-three thousand, eighty-seven".

Divisors: 1 3 19221029 57663087