57922987 has 4 divisors (see below), whose sum is σ = 58027536. Its totient is φ = 57818440.

The previous prime is 57922981. The next prime is 57922999. The reversal of 57922987 is 78922975.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57922987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57922987.

It is not an unprimeable number, because it can be changed into a prime (57922981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51439 + ... + 52552.

It is an arithmetic number, because the mean of its divisors is an integer number (14506884).

Almost surely, 2^57922987 is an apocalyptic number.

57922987 is a deficient number, since it is larger than the sum of its proper divisors (104549).

57922987 is a wasteful number, since it uses less digits than its factorization.

57922987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104548.

The product of its digits is 635040, while the sum is 49.

The square root of 57922987 is about 7610.7152751893. The cubic root of 57922987 is about 386.9162618423.

The spelling of 57922987 in words is "fifty-seven million, nine hundred twenty-two thousand, nine hundred eighty-seven".