55121552252 has 36 divisors (see below), whose sum is σ = 106355176200. Its totient is φ = 24849028512.

The previous prime is 55121552219. The next prime is 55121552263. The reversal of 55121552252 is 25225512155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190502 + ... + 382797.

It is an arithmetic number, because the mean of its divisors is an integer number (2954310450).

Almost surely, 2^55121552252 is an apocalyptic number.

55121552252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55121552252 is a deficient number, since it is larger than the sum of its proper divisors (51233623948).

55121552252 is a wasteful number, since it uses less digits than its factorization.

55121552252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573402 (or 573357 counting only the distinct ones).

The product of its digits is 50000, while the sum is 35.

The spelling of 55121552252 in words is "fifty-five billion, one hundred twenty-one million, five hundred fifty-two thousand, two hundred fifty-two".