55401312 has 24 divisors (see below), whose sum is σ = 145428696. Its totient is φ = 18467072.

The previous prime is 55401299. The next prime is 55401383. The reversal of 55401312 is 21310455.

55401312 is digitally balanced in base 2, 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 (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288453 + ... + 288644.

It is an arithmetic number, because the mean of its divisors is an integer number (6059529).

Almost surely, 2^55401312 is an apocalyptic number.

It is an amenable number.

55401312 is an abundant number, since it is smaller than the sum of its proper divisors (90027384).

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

55401312 is a wasteful number, since it uses less digits than its factorization.

55401312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577110 (or 577102 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55401312 is about 7443.2057609608. The cubic root of 55401312 is about 381.2179572819.

Adding to 55401312 its reverse (21310455), we get a palindrome (76711767).

The spelling of 55401312 in words is "fifty-five million, four hundred one thousand, three hundred twelve".