655515500 has 24 divisors (see below), whose sum is σ = 1431646944. Its totient is φ = 262206000.

The previous prime is 655515493. The next prime is 655515541. The reversal of 655515500 is 5515556.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655016 + ... + 656015.

It is an arithmetic number, because the mean of its divisors is an integer number (59651956).

Almost surely, 2^655515500 is an apocalyptic number.

It is an amenable number.

655515500 is an abundant number, since it is smaller than the sum of its proper divisors (776131444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655515500 is a wasteful number, since it uses less digits than its factorization.

655515500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311050 (or 1311038 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 655515500 is about 25603.0369292395. The cubic root of 655515500 is about 868.6823317374.

The spelling of 655515500 in words is "six hundred fifty-five million, five hundred fifteen thousand, five hundred".