55720084 has 96 divisors (see below), whose sum is σ = 127491840. Its totient is φ = 20736000.

The previous prime is 55720073. The next prime is 55720109. The reversal of 55720084 is 48002755.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 551634 + ... + 551734.

It is an arithmetic number, because the mean of its divisors is an integer number (1328040).

Almost surely, 2^55720084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55720084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63745920).

55720084 is an abundant number, since it is smaller than the sum of its proper divisors (71771756).

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

55720084 is a wasteful number, since it uses less digits than its factorization.

55720084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 55720084 is about 7464.5886691766. The cubic root of 55720084 is about 381.9477190587.

The spelling of 55720084 in words is "fifty-five million, seven hundred twenty thousand, eighty-four".