57797245421 has 4 divisors (see below), whose sum is σ = 57798026844. Its totient is φ = 57796464000.

The previous prime is 57797245409. The next prime is 57797245487. The reversal of 57797245421 is 12454279775.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33317200900 + 24480044521 = 182530^2 + 156461^2 .

It is a cyclic number.

It is not a de Polignac number, because 57797245421 - 2²² = 57793051117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57797245321) 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, 266630 + ... + 432071.

It is an arithmetic number, because the mean of its divisors is an integer number (14449506711).

Almost surely, 2^57797245421 is an apocalyptic number.

It is an amenable number.

57797245421 is a deficient number, since it is larger than the sum of its proper divisors (781423).

57797245421 is an equidigital number, since it uses as much as digits as its factorization.

57797245421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781422.

The product of its digits is 4939200, while the sum is 53.

The spelling of 57797245421 in words is "fifty-seven billion, seven hundred ninety-seven million, two hundred forty-five thousand, four hundred twenty-one".