55930072 has 48 divisors (see below), whose sum is σ = 121375800. Its totient is φ = 24076800.

The previous prime is 55930001. The next prime is 55930081. The reversal of 55930072 is 27003955.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16872 + ... + 19912.

Almost surely, 2^55930072 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 55930072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60687900).

55930072 is an abundant number, since it is smaller than the sum of its proper divisors (65445728).

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

55930072 is a wasteful number, since it uses less digits than its factorization.

55930072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088 (or 3073 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 55930072 is about 7478.6410530256. The cubic root of 55930072 is about 382.4269232574.

The spelling of 55930072 in words is "fifty-five million, nine hundred thirty thousand, seventy-two".