57745381 has 2 divisors, whose sum is σ = 57745382. Its totient is φ = 57745380.

The previous prime is 57745367. The next prime is 57745393. The reversal of 57745381 is 18354775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52794756 + 4950625 = 7266^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 57745381 - 2²³ = 49356773 is a prime.

It is a super-2 number, since 2×57745381² = 6669058053670322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57745981) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28872690 + 28872691.

It is an arithmetic number, because the mean of its divisors is an integer number (28872691).

Almost surely, 2^57745381 is an apocalyptic number.

It is an amenable number.

57745381 is a deficient number, since it is larger than the sum of its proper divisors (1).

57745381 is an equidigital number, since it uses as much as digits as its factorization.

57745381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 57745381 is about 7599.0381628203. The cubic root of 57745381 is about 386.5203970967.

The spelling of 57745381 in words is "fifty-seven million, seven hundred forty-five thousand, three hundred eighty-one".