57226861 has 2 divisors, whose sum is σ = 57226862. Its totient is φ = 57226860.

The previous prime is 57226859. The next prime is 57226891. The reversal of 57226861 is 16862275.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54686025 + 2540836 = 7395^2 + 1594^2 .

It is a cyclic number.

It is not a de Polignac number, because 57226861 - 2¹ = 57226859 is a prime.

Together with 57226859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57226861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57226801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28613430 + 28613431.

It is an arithmetic number, because the mean of its divisors is an integer number (28613431).

Almost surely, 2^57226861 is an apocalyptic number.

It is an amenable number.

57226861 is a deficient number, since it is larger than the sum of its proper divisors (1).

57226861 is an equidigital number, since it uses as much as digits as its factorization.

57226861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 57226861 is about 7564.8437525173. The cubic root of 57226861 is about 385.3600073295.

The spelling of 57226861 in words is "fifty-seven million, two hundred twenty-six thousand, eight hundred sixty-one".