55073304 has 128 divisors (see below), whose sum is σ = 179827200. Its totient is φ = 15396480.

The previous prime is 55073303. The next prime is 55073309. The reversal of 55073304 is 40337055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55073303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29997 + ... + 31779.

It is an arithmetic number, because the mean of its divisors is an integer number (1404900).

Almost surely, 2^55073304 is an apocalyptic number.

55073304 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55073304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89913600).

55073304 is an abundant number, since it is smaller than the sum of its proper divisors (124753896).

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

55073304 is a wasteful number, since it uses less digits than its factorization.

55073304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 55073304 is about 7421.1389961380. The cubic root of 55073304 is about 380.4641235730.

The spelling of 55073304 in words is "fifty-five million, seventy-three thousand, three hundred four".