55155156 has 24 divisors (see below), whose sum is σ = 147080640. Its totient is φ = 15758592.

The previous prime is 55155151. The next prime is 55155167. The reversal of 55155156 is 65155155.

55155156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55155151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328221 + ... + 328388.

It is an arithmetic number, because the mean of its divisors is an integer number (6128360).

Almost surely, 2^55155156 is an apocalyptic number.

It is an amenable number.

55155156 is an abundant number, since it is smaller than the sum of its proper divisors (91925484).

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

55155156 is a wasteful number, since it uses less digits than its factorization.

55155156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656623 (or 656621 counting only the distinct ones).

The product of its digits is 18750, while the sum is 33.

The square root of 55155156 is about 7426.6517354727. The cubic root of 55155156 is about 380.6525169318.

Subtracting 55155156 from its reverse (65155155), we obtain a palindrome (9999999).

The spelling of 55155156 in words is "fifty-five million, one hundred fifty-five thousand, one hundred fifty-six".