57273157 has 2 divisors, whose sum is σ = 57273158. Its totient is φ = 57273156.

The previous prime is 57273137. The next prime is 57273193. The reversal of 57273157 is 75137275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51825601 + 5447556 = 7199^2 + 2334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57273157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57273107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28636578 + 28636579.

It is an arithmetic number, because the mean of its divisors is an integer number (28636579).

Almost surely, 2^57273157 is an apocalyptic number.

It is an amenable number.

57273157 is a deficient number, since it is larger than the sum of its proper divisors (1).

57273157 is an equidigital number, since it uses as much as digits as its factorization.

57273157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51450, while the sum is 37.

The square root of 57273157 is about 7567.9030781320. The cubic root of 57273157 is about 385.4638968771.

The spelling of 57273157 in words is "fifty-seven million, two hundred seventy-three thousand, one hundred fifty-seven".