57426491 has 4 divisors (see below), whose sum is σ = 57464352. Its totient is φ = 57388632.

The previous prime is 57426451. The next prime is 57426503. The reversal of 57426491 is 19462475.

57426491 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 57426491 - 2¹⁸ = 57164347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57426431) 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, 16556 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (14366088).

Almost surely, 2^57426491 is an apocalyptic number.

57426491 is a deficient number, since it is larger than the sum of its proper divisors (37861).

57426491 is a wasteful number, since it uses less digits than its factorization.

57426491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37860.

The product of its digits is 60480, while the sum is 38.

The square root of 57426491 is about 7578.0268540036. The cubic root of 57426491 is about 385.8075834993.

The spelling of 57426491 in words is "fifty-seven million, four hundred twenty-six thousand, four hundred ninety-one".