57072277 has 2 divisors, whose sum is σ = 57072278. Its totient is φ = 57072276.

The previous prime is 57072259. The next prime is 57072289. The reversal of 57072277 is 77227075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36650916 + 20421361 = 6054^2 + 4519^2 .

It is a cyclic number.

It is not a de Polignac number, because 57072277 - 2¹⁹ = 56547989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57072227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28536138 + 28536139.

It is an arithmetic number, because the mean of its divisors is an integer number (28536139).

Almost surely, 2^57072277 is an apocalyptic number.

It is an amenable number.

57072277 is a deficient number, since it is larger than the sum of its proper divisors (1).

57072277 is an equidigital number, since it uses as much as digits as its factorization.

57072277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 57072277 is about 7554.6195800980. The cubic root of 57072277 is about 385.0127099869.

The spelling of 57072277 in words is "fifty-seven million, seventy-two thousand, two hundred seventy-seven".