57689081 has 2 divisors, whose sum is σ = 57689082. Its totient is φ = 57689080.

The previous prime is 57689059. The next prime is 57689113. The reversal of 57689081 is 18098675.

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., 33825856 + 23863225 = 5816^2 + 4885^2 .

It is a cyclic number.

It is not a de Polignac number, because 57689081 - 2⁶ = 57689017 is a prime.

It is a super-2 number, since 2×57689081² = 6656060133249122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57689011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28844540 + 28844541.

It is an arithmetic number, because the mean of its divisors is an integer number (28844541).

Almost surely, 2^57689081 is an apocalyptic number.

It is an amenable number.

57689081 is a deficient number, since it is larger than the sum of its proper divisors (1).

57689081 is an equidigital number, since it uses as much as digits as its factorization.

57689081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 57689081 is about 7595.3328432663. The cubic root of 57689081 is about 386.3947410185.

The spelling of 57689081 in words is "fifty-seven million, six hundred eighty-nine thousand, eighty-one".