57427919 has 4 divisors (see below), whose sum is σ = 58763496. Its totient is φ = 56092344.

The previous prime is 57427913. The next prime is 57427939. The reversal of 57427919 is 91972475.

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-57427919 is a prime.

It is a super-2 number, since 2×57427919² = 6595931761341122, which contains 22 as substring.

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 57427919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57427913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667724 + ... + 667809.

It is an arithmetic number, because the mean of its divisors is an integer number (14690874).

Almost surely, 2^57427919 is an apocalyptic number.

57427919 is a deficient number, since it is larger than the sum of its proper divisors (1335577).

57427919 is a wasteful number, since it uses less digits than its factorization.

57427919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335576.

The product of its digits is 158760, while the sum is 44.

The square root of 57427919 is about 7578.1210731949. The cubic root of 57427919 is about 385.8107813769.

The spelling of 57427919 in words is "fifty-seven million, four hundred twenty-seven thousand, nine hundred nineteen".