57426887 has 8 divisors (see below), whose sum is σ = 67157376. Its totient is φ = 48078072.

The previous prime is 57426881. The next prime is 57426893. The reversal of 57426887 is 78862475.

It is an interprime number because it is at equal distance from previous prime (57426881) and next prime (57426893).

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

It is not a de Polignac number, because 57426887 - 2⁸ = 57426631 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 (57426881) 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, 95093 + ... + 95694.

It is an arithmetic number, because the mean of its divisors is an integer number (8394672).

Almost surely, 2^57426887 is an apocalyptic number.

57426887 is a deficient number, since it is larger than the sum of its proper divisors (9730489).

57426887 is a wasteful number, since it uses less digits than its factorization.

57426887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190837.

The product of its digits is 752640, while the sum is 47.

The square root of 57426887 is about 7578.0529821320. The cubic root of 57426887 is about 385.8084703110.

The spelling of 57426887 in words is "fifty-seven million, four hundred twenty-six thousand, eight hundred eighty-seven".