655838550 has 36 divisors (see below), whose sum is σ = 1762020780. Its totient is φ = 174890160.

The previous prime is 655838539. The next prime is 655838569. The reversal of 655838550 is 55838556.

655838550 is a `hidden beast` number, since 65 + 5 + 8 + 38 + 550 = 666.

655838550 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×655838550² = 860248407332205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 655838496 and 655838505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 728260 + ... + 729159.

Almost surely, 2^655838550 is an apocalyptic number.

655838550 is an abundant number, since it is smaller than the sum of its proper divisors (1106182230).

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

655838550 is a wasteful number, since it uses less digits than its factorization.

655838550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457437 (or 1457429 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The square root of 655838550 is about 25609.3449740520. The cubic root of 655838550 is about 868.8250091368.

The spelling of 655838550 in words is "six hundred fifty-five million, eight hundred thirty-eight thousand, five hundred fifty".