57678731 has 4 divisors (see below), whose sum is σ = 62922264. Its totient is φ = 52435200.

The previous prime is 57678713. The next prime is 57678743. The reversal of 57678731 is 13787675.

57678731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57678731 - 2¹⁰ = 57677707 is a prime.

It is a super-2 number, since 2×57678731² = 6653672019540722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57678791) 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 3 ways as a sum of consecutive naturals, for example, 2621750 + ... + 2621771.

It is an arithmetic number, because the mean of its divisors is an integer number (15730566).

Almost surely, 2^57678731 is an apocalyptic number.

57678731 is a deficient number, since it is larger than the sum of its proper divisors (5243533).

57678731 is a wasteful number, since it uses less digits than its factorization.

57678731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243532.

The product of its digits is 246960, while the sum is 44.

The square root of 57678731 is about 7594.6514732409. The cubic root of 57678731 is about 386.3716319386.

The spelling of 57678731 in words is "fifty-seven million, six hundred seventy-eight thousand, seven hundred thirty-one".