57491782 has 4 divisors (see below), whose sum is σ = 86237676. Its totient is φ = 28745890.

The previous prime is 57491767. The next prime is 57491827. The reversal of 57491782 is 28719475.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14372944 + ... + 14372947.

It is an arithmetic number, because the mean of its divisors is an integer number (21559419).

Almost surely, 2^57491782 is an apocalyptic number.

57491782 is a deficient number, since it is larger than the sum of its proper divisors (28745894).

57491782 is a wasteful number, since it uses less digits than its factorization.

57491782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28745893.

The product of its digits is 141120, while the sum is 43.

The square root of 57491782 is about 7582.3335458156. Note that the first 3 decimals coincide. The cubic root of 57491782 is about 385.9537426559.

The spelling of 57491782 in words is "fifty-seven million, four hundred ninety-one thousand, seven hundred eighty-two".