57892421 has 2 divisors, whose sum is σ = 57892422. Its totient is φ = 57892420.

The previous prime is 57892321. The next prime is 57892423. The reversal of 57892421 is 12429875.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53436100 + 4456321 = 7310^2 + 2111^2 .

It is a cyclic number.

It is not a de Polignac number, because 57892421 - 2¹⁰ = 57891397 is a prime.

It is a Sophie Germain prime.

Together with 57892423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57892423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28946210 + 28946211.

It is an arithmetic number, because the mean of its divisors is an integer number (28946211).

Almost surely, 2^57892421 is an apocalyptic number.

It is an amenable number.

57892421 is a deficient number, since it is larger than the sum of its proper divisors (1).

57892421 is an equidigital number, since it uses as much as digits as its factorization.

57892421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 57892421 is about 7608.7069203643. The cubic root of 57892421 is about 386.8481912082.

The spelling of 57892421 in words is "fifty-seven million, eight hundred ninety-two thousand, four hundred twenty-one".