57286657 has 2 divisors, whose sum is σ = 57286658. Its totient is φ = 57286656.

The previous prime is 57286639. The next prime is 57286679. The reversal of 57286657 is 75668275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42302016 + 14984641 = 6504^2 + 3871^2 .

It is a cyclic number.

It is not a de Polignac number, because 57286657 - 2²³ = 48898049 is a prime.

It is a super-2 number, since 2×57286657² = 6563522140471298, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57286637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28643328 + 28643329.

It is an arithmetic number, because the mean of its divisors is an integer number (28643329).

It is a Proth number, since it is equal to 6993 ⋅ 2¹³ + 1 and 6993 < 2¹³.

Almost surely, 2^57286657 is an apocalyptic number.

It is an amenable number.

57286657 is a deficient number, since it is larger than the sum of its proper divisors (1).

57286657 is an equidigital number, since it uses as much as digits as its factorization.

57286657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The square root of 57286657 is about 7568.7949503207. The cubic root of 57286657 is about 385.4941807196.

The spelling of 57286657 in words is "fifty-seven million, two hundred eighty-six thousand, six hundred fifty-seven".