55319950 has 48 divisors (see below), whose sum is σ = 118385280. Its totient is φ = 18839520.

The previous prime is 55319939. The next prime is 55319981. The reversal of 55319950 is 5991355.

55319950 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 an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 62209 + ... + 63091.

It is an arithmetic number, because the mean of its divisors is an integer number (2466360).

Almost surely, 2^55319950 is an apocalyptic number.

55319950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55319950 is an abundant number, since it is smaller than the sum of its proper divisors (63065330).

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

55319950 is a wasteful number, since it uses less digits than its factorization.

55319950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 30375, while the sum is 37.

The square root of 55319950 is about 7437.7382314787. The cubic root of 55319950 is about 381.0312477959.

It can be divided in two parts, 553 and 19950, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 55319950 in words is "fifty-five million, three hundred nineteen thousand, nine hundred fifty".