655054220 has 24 divisors (see below), whose sum is σ = 1387792224. Its totient is φ = 259702016.

The previous prime is 655054219. The next prime is 655054223. The reversal of 655054220 is 22450556.

It is a super-2 number, since 2×655054220² = 858192062279616800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655054223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142664 + ... + 147183.

It is an arithmetic number, because the mean of its divisors is an integer number (57824676).

Almost surely, 2^655054220 is an apocalyptic number.

It is an amenable number.

655054220 is an abundant number, since it is smaller than the sum of its proper divisors (732738004).

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

655054220 is a wasteful number, since it uses less digits than its factorization.

655054220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289969 (or 289967 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 655054220 is about 25594.0270375727. The cubic root of 655054220 is about 868.4785227689.

The spelling of 655054220 in words is "six hundred fifty-five million, fifty-four thousand, two hundred twenty".