55315408 has 40 divisors (see below), whose sum is σ = 111342080. Its totient is φ = 26593920.

The previous prime is 55315397. The next prime is 55315409. The reversal of 55315408 is 80451355.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 55315408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55315409) 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 7 ways as a sum of consecutive naturals, for example, 113341 + ... + 113827.

It is an arithmetic number, because the mean of its divisors is an integer number (2783552).

Almost surely, 2^55315408 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 55315408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55671040).

55315408 is an abundant number, since it is smaller than the sum of its proper divisors (56026672).

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

55315408 is a wasteful number, since it uses less digits than its factorization.

55315408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 55315408 is about 7437.4328904535. The cubic root of 55315408 is about 381.0208194225.

The spelling of 55315408 in words is "fifty-five million, three hundred fifteen thousand, four hundred eight".