505497965 has 16 divisors (see below), whose sum is σ = 707404800. Its totient is φ = 346626000.

The previous prime is 505497931. The next prime is 505497977. The reversal of 505497965 is 569794505.

It is a happy number.

It is not a de Polignac number, because 505497965 - 2⁸ = 505497709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145661 + ... + 149090.

It is an arithmetic number, because the mean of its divisors is an integer number (44212800).

Almost surely, 2^505497965 is an apocalyptic number.

It is an amenable number.

505497965 is a deficient number, since it is larger than the sum of its proper divisors (201906835).

505497965 is an equidigital number, since it uses as much as digits as its factorization.

505497965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294777 (or 294763 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 50.

The square root of 505497965 is about 22483.2819001141. The cubic root of 505497965 is about 796.5990861561.

The spelling of 505497965 in words is "five hundred five million, four hundred ninety-seven thousand, nine hundred sixty-five".