57921427 has 4 divisors (see below), whose sum is σ = 58434120. Its totient is φ = 57408736.

The previous prime is 57921407. The next prime is 57921463. The reversal of 57921427 is 72412975.

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 57921427 - 2¹⁵ = 57888659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57921407) 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, 256177 + ... + 256402.

It is an arithmetic number, because the mean of its divisors is an integer number (14608530).

Almost surely, 2^57921427 is an apocalyptic number.

57921427 is a deficient number, since it is larger than the sum of its proper divisors (512693).

57921427 is a wasteful number, since it uses less digits than its factorization.

57921427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512692.

The product of its digits is 35280, while the sum is 37.

The square root of 57921427 is about 7610.6127874173. The cubic root of 57921427 is about 386.9127882945.

The spelling of 57921427 in words is "fifty-seven million, nine hundred twenty-one thousand, four hundred twenty-seven".