57740489 has 2 divisors, whose sum is σ = 57740490. Its totient is φ = 57740488.

The previous prime is 57740407. The next prime is 57740491. The reversal of 57740489 is 98404775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 284089 = 7580^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 57740489 - 2²⁰ = 56691913 is a prime.

Together with 57740491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57740689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28870244 + 28870245.

It is an arithmetic number, because the mean of its divisors is an integer number (28870245).

Almost surely, 2^57740489 is an apocalyptic number.

It is an amenable number.

57740489 is a deficient number, since it is larger than the sum of its proper divisors (1).

57740489 is an equidigital number, since it uses as much as digits as its factorization.

57740489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 57740489 is about 7598.7162731609. The cubic root of 57740489 is about 386.5094818734.

The spelling of 57740489 in words is "fifty-seven million, seven hundred forty thousand, four hundred eighty-nine".