557519987 has 2 divisors, whose sum is σ = 557519988. Its totient is φ = 557519986.

The previous prime is 557519971. The next prime is 557520037. The reversal of 557519987 is 789915755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557519987 - 2⁴ = 557519971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (557519917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278759993 + 278759994.

It is an arithmetic number, because the mean of its divisors is an integer number (278759994).

Almost surely, 2^557519987 is an apocalyptic number.

557519987 is a deficient number, since it is larger than the sum of its proper divisors (1).

557519987 is an equidigital number, since it uses as much as digits as its factorization.

557519987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969000, while the sum is 56.

The square root of 557519987 is about 23611.8611507014. The cubic root of 557519987 is about 823.0384925404.

The spelling of 557519987 in words is "five hundred fifty-seven million, five hundred nineteen thousand, nine hundred eighty-seven".