55720152 has 48 divisors (see below), whose sum is σ = 159789240. Its totient is φ = 17480448.

The previous prime is 55720151. The next prime is 55720163. The reversal of 55720152 is 25102755.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55720151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21538 + ... + 23985.

Almost surely, 2^55720152 is an apocalyptic number.

It is an amenable number.

55720152 is an abundant number, since it is smaller than the sum of its proper divisors (104069088).

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

55720152 is a wasteful number, since it uses less digits than its factorization.

55720152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45552 (or 45545 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55720152 is about 7464.5932240143. The cubic root of 55720152 is about 381.9478744332.

The spelling of 55720152 in words is "fifty-five million, seven hundred twenty thousand, one hundred fifty-two".