57976421 has 2 divisors, whose sum is σ = 57976422. Its totient is φ = 57976420.

The previous prime is 57976361. The next prime is 57976433. The reversal of 57976421 is 12467975.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57547396 + 429025 = 7586^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 57976421 - 2¹⁰ = 57975397 is a prime.

It is a super-2 number, since 2×57976421² = 6722530783938482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57976921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28988210 + 28988211.

It is an arithmetic number, because the mean of its divisors is an integer number (28988211).

Almost surely, 2^57976421 is an apocalyptic number.

It is an amenable number.

57976421 is a deficient number, since it is larger than the sum of its proper divisors (1).

57976421 is an equidigital number, since it uses as much as digits as its factorization.

57976421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 57976421 is about 7614.2249113091. The cubic root of 57976421 is about 387.0352021252.

The spelling of 57976421 in words is "fifty-seven million, nine hundred seventy-six thousand, four hundred twenty-one".