57042751 has 2 divisors, whose sum is σ = 57042752. Its totient is φ = 57042750.

The previous prime is 57042743. The next prime is 57042761. The reversal of 57042751 is 15724075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57042751 - 2³ = 57042743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57042721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28521375 + 28521376.

It is an arithmetic number, because the mean of its divisors is an integer number (28521376).

Almost surely, 2^57042751 is an apocalyptic number.

57042751 is a deficient number, since it is larger than the sum of its proper divisors (1).

57042751 is an equidigital number, since it uses as much as digits as its factorization.

57042751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 57042751 is about 7552.6651587370. The cubic root of 57042751 is about 384.9463038623.

The spelling of 57042751 in words is "fifty-seven million, forty-two thousand, seven hundred fifty-one".