55355552 has 48 divisors (see below), whose sum is σ = 127935360. Its totient is φ = 23079168.

The previous prime is 55355551. The next prime is 55355561. The reversal of 55355552 is 25555355.

It is not an unprimeable number, because it can be changed into a prime (55355551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4949 + ... + 11627.

It is an arithmetic number, because the mean of its divisors is an integer number (2665320).

Almost surely, 2^55355552 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 55355552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63967680).

55355552 is an abundant number, since it is smaller than the sum of its proper divisors (72579808).

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

55355552 is a wasteful number, since it uses less digits than its factorization.

55355552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733 (or 6725 counting only the distinct ones).

The product of its digits is 93750, while the sum is 35.

The square root of 55355552 is about 7440.1311816392. The cubic root of 55355552 is about 381.1129697632.

The spelling of 55355552 in words is "fifty-five million, three hundred fifty-five thousand, five hundred fifty-two".