55155662212 has 24 divisors (see below), whose sum is σ = 110530659456. Its totient is φ = 23591140608.

The previous prime is 55155662203. The next prime is 55155662251. The reversal of 55155662212 is 21226655155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944013 + ... + 1972180.

It is an arithmetic number, because the mean of its divisors is an integer number (4605444144).

Almost surely, 2^55155662212 is an apocalyptic number.

It is an amenable number.

55155662212 is an abundant number, since it is smaller than the sum of its proper divisors (55374997244).

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

55155662212 is a wasteful number, since it uses less digits than its factorization.

55155662212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916707 (or 3916705 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The spelling of 55155662212 in words is "fifty-five billion, one hundred fifty-five million, six hundred sixty-two thousand, two hundred twelve".