57997487 has 2 divisors, whose sum is σ = 57997488. Its totient is φ = 57997486.

The previous prime is 57997403. The next prime is 57997507. The reversal of 57997487 is 78479975.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57997487 - 2²⁰ = 56948911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57997087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28998743 + 28998744.

It is an arithmetic number, because the mean of its divisors is an integer number (28998744).

Almost surely, 2^57997487 is an apocalyptic number.

57997487 is a deficient number, since it is larger than the sum of its proper divisors (1).

57997487 is an equidigital number, since it uses as much as digits as its factorization.

57997487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 56.

The square root of 57997487 is about 7615.6081175439. The cubic root of 57997487 is about 387.0820734573.

The spelling of 57997487 in words is "fifty-seven million, nine hundred ninety-seven thousand, four hundred eighty-seven".