57266789 has 2 divisors, whose sum is σ = 57266790. Its totient is φ = 57266788.

The previous prime is 57266777. The next prime is 57266801. The reversal of 57266789 is 98766275.

It is a balanced prime because it is at equal distance from previous prime (57266777) and next prime (57266801).

It can be written as a sum of positive squares in only one way, i.e., 40538689 + 16728100 = 6367^2 + 4090^2 .

It is a cyclic number.

It is not a de Polignac number, because 57266789 - 2⁴ = 57266773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57266089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28633394 + 28633395.

It is an arithmetic number, because the mean of its divisors is an integer number (28633395).

Almost surely, 2^57266789 is an apocalyptic number.

It is an amenable number.

57266789 is a deficient number, since it is larger than the sum of its proper divisors (1).

57266789 is an equidigital number, since it uses as much as digits as its factorization.

57266789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 57266789 is about 7567.4823422325. The cubic root of 57266789 is about 385.4496102246.

The spelling of 57266789 in words is "fifty-seven million, two hundred sixty-six thousand, seven hundred eighty-nine".