57429257 has 2 divisors, whose sum is σ = 57429258. Its totient is φ = 57429256.

The previous prime is 57429161. The next prime is 57429259. The reversal of 57429257 is 75292475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45010681 + 12418576 = 6709^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 57429257 - 2¹⁸ = 57167113 is a prime.

Together with 57429259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57429259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28714628 + 28714629.

It is an arithmetic number, because the mean of its divisors is an integer number (28714629).

Almost surely, 2^57429257 is an apocalyptic number.

It is an amenable number.

57429257 is a deficient number, since it is larger than the sum of its proper divisors (1).

57429257 is an equidigital number, since it uses as much as digits as its factorization.

57429257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 41.

The square root of 57429257 is about 7578.2093531388. The cubic root of 57429257 is about 385.8137776595.

The spelling of 57429257 in words is "fifty-seven million, four hundred twenty-nine thousand, two hundred fifty-seven".