497977557 has 24 divisors (see below), whose sum is σ = 834082368. Its totient is φ = 258688320.

The previous prime is 497977547. The next prime is 497977573. The reversal of 497977557 is 755779794.

It is not a de Polignac number, because 497977557 - 2⁷ = 497977429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 497977557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497977537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95448 + ... + 100529.

It is an arithmetic number, because the mean of its divisors is an integer number (34753432).

Almost surely, 2^497977557 is an apocalyptic number.

It is an amenable number.

497977557 is a deficient number, since it is larger than the sum of its proper divisors (336104811).

497977557 is a wasteful number, since it uses less digits than its factorization.

497977557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196009 (or 195998 counting only the distinct ones).

The product of its digits is 19448100, while the sum is 60.

The square root of 497977557 is about 22315.4107513171. The cubic root of 497977557 is about 792.6289371493.

The spelling of 497977557 in words is "four hundred ninety-seven million, nine hundred seventy-seven thousand, five hundred fifty-seven".