55427072 has 60 divisors (see below), whose sum is σ = 117961200. Its totient is φ = 25952256.

The previous prime is 55427063. The next prime is 55427077. The reversal of 55427072 is 27072455.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55427077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278429 + ... + 278627.

It is an arithmetic number, because the mean of its divisors is an integer number (1966020).

Almost surely, 2^55427072 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 55427072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58980600).

55427072 is an abundant number, since it is smaller than the sum of its proper divisors (62534128).

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

55427072 is an equidigital number, since it uses as much as digits as its factorization.

55427072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 55427072 is about 7444.9359970385. The cubic root of 55427072 is about 381.2770332170.

The spelling of 55427072 in words is "fifty-five million, four hundred twenty-seven thousand, seventy-two".