55515456 has 70 divisors (see below), whose sum is σ = 164580570. Its totient is φ = 18503424.

The previous prime is 55515437. The next prime is 55515457. The reversal of 55515456 is 65451555.

55515456 is a `hidden beast` number, since 5 + 551 + 54 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54997056 + 518400 = 7416^2 + 720^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 55515456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55515457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 171 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (2351151).

Almost surely, 2^55515456 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 55515456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82290285).

55515456 is an abundant number, since it is smaller than the sum of its proper divisors (109065114).

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

55515456 is a wasteful number, since it uses less digits than its factorization.

55515456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733 (or 10714 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 55515456 is about 7450.8694794635. The cubic root of 55515456 is about 381.4795870228.

The spelling of 55515456 in words is "fifty-five million, five hundred fifteen thousand, four hundred fifty-six".