55156988 has 6 divisors (see below), whose sum is σ = 96524736. Its totient is φ = 27578492.

The previous prime is 55156987. The next prime is 55157017. The reversal of 55156988 is 88965155.

55156988 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 (55156987) 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 as a sum of consecutive naturals, namely, 6894620 + ... + 6894627.

It is an arithmetic number, because the mean of its divisors is an integer number (16087456).

Almost surely, 2^55156988 is an apocalyptic number.

It is an amenable number.

55156988 is a deficient number, since it is larger than the sum of its proper divisors (41367748).

55156988 is a wasteful number, since it uses less digits than its factorization.

55156988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13789251 (or 13789249 counting only the distinct ones).

The product of its digits is 432000, while the sum is 47.

The square root of 55156988 is about 7426.7750740143. The cubic root of 55156988 is about 380.6567313924.

The spelling of 55156988 in words is "fifty-five million, one hundred fifty-six thousand, nine hundred eighty-eight".