55255572 has 36 divisors (see below), whose sum is σ = 147026880. Its totient is φ = 17448912.

The previous prime is 55255517. The next prime is 55255573. The reversal of 55255572 is 27555255.

55255572 is a `hidden beast` number, since 552 + 55 + 57 + 2 = 666.

55255572 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

55255572 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255573) 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, 39708 + ... + 41075.

It is an arithmetic number, because the mean of its divisors is an integer number (4084080).

Almost surely, 2^55255572 is an apocalyptic number.

It is an amenable number.

55255572 is an abundant number, since it is smaller than the sum of its proper divisors (91771308).

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

55255572 is a wasteful number, since it uses less digits than its factorization.

55255572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80812 (or 80807 counting only the distinct ones).

The product of its digits is 87500, while the sum is 36.

The square root of 55255572 is about 7433.4091774905. The cubic root of 55255572 is about 380.8833834098.

The spelling of 55255572 in words is "fifty-five million, two hundred fifty-five thousand, five hundred seventy-two".