57131089 has 2 divisors, whose sum is σ = 57131090. Its totient is φ = 57131088.

The previous prime is 57131083. The next prime is 57131093. The reversal of 57131089 is 98013175.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54464400 + 2666689 = 7380^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 57131089 - 2¹¹ = 57129041 is a prime.

It is a super-2 number, since 2×57131089² = 6527922660651842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57131083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28565544 + 28565545.

It is an arithmetic number, because the mean of its divisors is an integer number (28565545).

Almost surely, 2^57131089 is an apocalyptic number.

It is an amenable number.

57131089 is a deficient number, since it is larger than the sum of its proper divisors (1).

57131089 is an equidigital number, since it uses as much as digits as its factorization.

57131089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 57131089 is about 7558.5110306197. The cubic root of 57131089 is about 385.1449142448.

The spelling of 57131089 in words is "fifty-seven million, one hundred thirty-one thousand, eighty-nine".