55403236 has 12 divisors (see below), whose sum is σ = 110806528. Its totient is φ = 23744232.

The previous prime is 55403233. The next prime is 55403237. The reversal of 55403236 is 63230455.

55403236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

55403236 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1978687 = 55403236 / (5 + 5 + 4 + 0 + 3 + 2 + 3 + 6).

It is not an unprimeable number, because it can be changed into a prime (55403233) 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 3 ways as a sum of consecutive naturals, for example, 989316 + ... + 989371.

Almost surely, 2^55403236 is an apocalyptic number.

It is an amenable number.

55403236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55403236 is a wasteful number, since it uses less digits than its factorization.

55403236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978698 (or 1978696 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 55403236 is about 7443.3350052245. The cubic root of 55403236 is about 381.2223702632. Note that the first 3 decimals are identical.

The spelling of 55403236 in words is "fifty-five million, four hundred three thousand, two hundred thirty-six".