55287156 has 24 divisors (see below), whose sum is σ = 130455360. Its totient is φ = 18221632.

The previous prime is 55287151. The next prime is 55287157. The reversal of 55287156 is 65178255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55287151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24816 + ... + 26951.

It is an arithmetic number, because the mean of its divisors is an integer number (5435640).

Almost surely, 2^55287156 is an apocalyptic number.

It is an amenable number.

55287156 is an abundant number, since it is smaller than the sum of its proper divisors (75168204).

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

55287156 is a wasteful number, since it uses less digits than its factorization.

55287156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51863 (or 51861 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 55287156 is about 7435.5333366209. The cubic root of 55287156 is about 380.9559403725.

The spelling of 55287156 in words is "fifty-five million, two hundred eighty-seven thousand, one hundred fifty-six".