57661169 has 2 divisors, whose sum is σ = 57661170. Its totient is φ = 57661168.

The previous prime is 57661141. The next prime is 57661183. The reversal of 57661169 is 96116675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45495025 + 12166144 = 6745^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 57661169 - 2⁸ = 57660913 is a prime.

It is a super-2 number, since 2×57661169² = 6649620820893122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57661189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28830584 + 28830585.

It is an arithmetic number, because the mean of its divisors is an integer number (28830585).

Almost surely, 2^57661169 is an apocalyptic number.

It is an amenable number.

57661169 is a deficient number, since it is larger than the sum of its proper divisors (1).

57661169 is an equidigital number, since it uses as much as digits as its factorization.

57661169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 57661169 is about 7593.4951767944. The cubic root of 57661169 is about 386.3324138578.

The spelling of 57661169 in words is "fifty-seven million, six hundred sixty-one thousand, one hundred sixty-nine".