57766427 has 2 divisors, whose sum is σ = 57766428. Its totient is φ = 57766426.

The previous prime is 57766399. The next prime is 57766439. The reversal of 57766427 is 72466775.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57766427 - 2¹⁰ = 57765403 is a prime.

It is not a weakly prime, because it can be changed into another prime (57766447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28883213 + 28883214.

It is an arithmetic number, because the mean of its divisors is an integer number (28883214).

Almost surely, 2^57766427 is an apocalyptic number.

57766427 is a deficient number, since it is larger than the sum of its proper divisors (1).

57766427 is an equidigital number, since it uses as much as digits as its factorization.

57766427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 44.

The square root of 57766427 is about 7600.4228171859. The cubic root of 57766427 is about 386.5673487320.

The spelling of 57766427 in words is "fifty-seven million, seven hundred sixty-six thousand, four hundred twenty-seven".