57266773 has 2 divisors, whose sum is σ = 57266774. Its totient is φ = 57266772.

The previous prime is 57266743. The next prime is 57266777. The reversal of 57266773 is 37766275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49660209 + 7606564 = 7047^2 + 2758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57266773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57266777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28633386 + 28633387.

It is an arithmetic number, because the mean of its divisors is an integer number (28633387).

Almost surely, 2^57266773 is an apocalyptic number.

It is an amenable number.

57266773 is a deficient number, since it is larger than the sum of its proper divisors (1).

57266773 is an equidigital number, since it uses as much as digits as its factorization.

57266773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 43.

The square root of 57266773 is about 7567.4812850776. The cubic root of 57266773 is about 385.4495743271.

The spelling of 57266773 in words is "fifty-seven million, two hundred sixty-six thousand, seven hundred seventy-three".