655155212 has 24 divisors (see below), whose sum is σ = 1169817600. Its totient is φ = 320973840.

The previous prime is 655155199. The next prime is 655155223. The reversal of 655155212 is 212551556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44789 + ... + 57587.

It is an arithmetic number, because the mean of its divisors is an integer number (48742400).

Almost surely, 2^655155212 is an apocalyptic number.

It is an amenable number.

655155212 is a deficient number, since it is larger than the sum of its proper divisors (514662388).

655155212 is a wasteful number, since it uses less digits than its factorization.

655155212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13061 (or 13059 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The square root of 655155212 is about 25595.9999218628. Note that the first 4 decimals coincide. The cubic root of 655155212 is about 868.5231525992.

The spelling of 655155212 in words is "six hundred fifty-five million, one hundred fifty-five thousand, two hundred twelve".