57144277 has 2 divisors, whose sum is σ = 57144278. Its totient is φ = 57144276.

The previous prime is 57144247. The next prime is 57144287. The reversal of 57144277 is 77244175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31651876 + 25492401 = 5626^2 + 5049^2 .

It is a cyclic number.

It is not a de Polignac number, because 57144277 - 2¹⁹ = 56619989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57144247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28572138 + 28572139.

It is an arithmetic number, because the mean of its divisors is an integer number (28572139).

Almost surely, 2^57144277 is an apocalyptic number.

It is an amenable number.

57144277 is a deficient number, since it is larger than the sum of its proper divisors (1).

57144277 is an equidigital number, since it uses as much as digits as its factorization.

57144277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54880, while the sum is 37.

The square root of 57144277 is about 7559.3833743236. The cubic root of 57144277 is about 385.1745472662.

The spelling of 57144277 in words is "fifty-seven million, one hundred forty-four thousand, two hundred seventy-seven".