55947156 has 12 divisors (see below), whose sum is σ = 130543392. Its totient is φ = 18649048.

The previous prime is 55947139. The next prime is 55947169. The reversal of 55947156 is 65174955.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2331120 + ... + 2331143.

It is an arithmetic number, because the mean of its divisors is an integer number (10878616).

Almost surely, 2^55947156 is an apocalyptic number.

It is an amenable number.

55947156 is an abundant number, since it is smaller than the sum of its proper divisors (74596236).

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

55947156 is a wasteful number, since it uses less digits than its factorization.

55947156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662270 (or 4662268 counting only the distinct ones).

The product of its digits is 189000, while the sum is 42.

The square root of 55947156 is about 7479.7831519370. The cubic root of 55947156 is about 382.4658570917.

The spelling of 55947156 in words is "fifty-five million, nine hundred forty-seven thousand, one hundred fifty-six".