57878511 has 24 divisors (see below), whose sum is σ = 82704000. Its totient is φ = 35935680.

The previous prime is 57878507. The next prime is 57878531. The reversal of 57878511 is 11587875.

It is not a de Polignac number, because 57878511 - 2² = 57878507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57878531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115740 + ... + 116238.

It is an arithmetic number, because the mean of its divisors is an integer number (3446000).

Almost surely, 2^57878511 is an apocalyptic number.

57878511 is a deficient number, since it is larger than the sum of its proper divisors (24825489).

57878511 is a wasteful number, since it uses less digits than its factorization.

57878511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 566 counting only the distinct ones).

The product of its digits is 78400, while the sum is 42.

The square root of 57878511 is about 7607.7927810897. The cubic root of 57878511 is about 386.8172056360.

The spelling of 57878511 in words is "fifty-seven million, eight hundred seventy-eight thousand, five hundred eleven".