57831978 has 16 divisors (see below), whose sum is σ = 115798176. Its totient is φ = 19254960.

The previous prime is 57831973. The next prime is 57832007. The reversal of 57831978 is 87913875.

57831978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57831973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525 + ... + 10767.

It is an arithmetic number, because the mean of its divisors is an integer number (7237386).

Almost surely, 2^57831978 is an apocalyptic number.

57831978 is an abundant number, since it is smaller than the sum of its proper divisors (57966198).

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

57831978 is a wasteful number, since it uses less digits than its factorization.

57831978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189.

The product of its digits is 423360, while the sum is 48.

The square root of 57831978 is about 7604.7339203946. The cubic root of 57831978 is about 386.7135137783.

The spelling of 57831978 in words is "fifty-seven million, eight hundred thirty-one thousand, nine hundred seventy-eight".