55156122 has 48 divisors (see below), whose sum is σ = 140280192. Its totient is φ = 15331680.

The previous prime is 55156117. The next prime is 55156133. The reversal of 55156122 is 22165155.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1254 + ... + 10577.

It is an arithmetic number, because the mean of its divisors is an integer number (2922504).

Almost surely, 2^55156122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55156122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70140096).

55156122 is an abundant number, since it is smaller than the sum of its proper divisors (85124070).

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

55156122 is a wasteful number, since it uses less digits than its factorization.

55156122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11883 (or 11880 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 55156122 is about 7426.7167712254. The cubic root of 55156122 is about 380.6547391972.

It can be divided in two parts, 55156 and 122, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 55156122 in words is "fifty-five million, one hundred fifty-six thousand, one hundred twenty-two".