57987078 has 16 divisors (see below), whose sum is σ = 116071680. Its totient is φ = 19312776.

The previous prime is 57987077. The next prime is 57987089. The reversal of 57987078 is 87078975.

It is a self number, because there is not a number n which added to its sum of digits gives 57987078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57987073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5343 + ... + 12021.

It is an arithmetic number, because the mean of its divisors is an integer number (7254480).

Almost surely, 2^57987078 is an apocalyptic number.

57987078 is an abundant number, since it is smaller than the sum of its proper divisors (58084602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57987078 is a wasteful number, since it uses less digits than its factorization.

57987078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131.

The product of its (nonzero) digits is 987840, while the sum is 51.

The square root of 57987078 is about 7614.9246877431. The cubic root of 57987078 is about 387.0589151070.

It can be divided in two parts, 5798707 and 8, that added together give a triangular number (5798715 = T₃₄₀₅).

The spelling of 57987078 in words is "fifty-seven million, nine hundred eighty-seven thousand, seventy-eight".