57331992481 has 3 divisors (see below), whose sum is σ = 57332231923. Its totient is φ = 57331753040.

The previous prime is 57331992461. The next prime is 57331992541. The reversal of 57331992481 is 18429913375.

The square root of 57331992481 is 239441.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 48154352481 + 9177640000 = 219441^2 + 95800^2 .

It is not a de Polignac number, because 57331992481 - 2¹⁷ = 57331861409 is a prime.

It is a super-2 number, since 2×57331992481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57331992461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 119721 + ... + 359161.

Almost surely, 2^57331992481 is an apocalyptic number.

57331992481 is the 239441-st square number.

57331992481 is the 119721-st centered octagonal number.

It is an amenable number.

57331992481 is a deficient number, since it is larger than the sum of its proper divisors (239442).

57331992481 is an frugal number, since it uses more digits than its factorization.

57331992481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478882 (or 239441 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The spelling of 57331992481 in words is "fifty-seven billion, three hundred thirty-one million, nine hundred ninety-two thousand, four hundred eighty-one".