55386072 has 96 divisors (see below), whose sum is σ = 179002800. Its totient is φ = 15821568.

The previous prime is 55386043. The next prime is 55386101. The reversal of 55386072 is 27068355.

It is an interprime number because it is at equal distance from previous prime (55386043) and next prime (55386101).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7968 + ... + 13200.

Almost surely, 2^55386072 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 55386072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89501400).

55386072 is an abundant number, since it is smaller than the sum of its proper divisors (123616728).

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

55386072 is a wasteful number, since it uses less digits than its factorization.

55386072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262 (or 5245 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55386072 is about 7442.1819381147. The cubic root of 55386072 is about 381.1829984559.

The spelling of 55386072 in words is "fifty-five million, three hundred eighty-six thousand, seventy-two".