55340880 has 80 divisors (see below), whose sum is σ = 196070784. Its totient is φ = 12648960.

The previous prime is 55340849. The next prime is 55340881. The reversal of 55340880 is 8804355.

It is a happy number.

55340880 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 (80).

It is a super-2 number, since 2×55340880² = 6125225998348800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55340881) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14791 + ... + 18150.

Almost surely, 2^55340880 is an apocalyptic number.

It is an amenable number.

55340880 is an abundant number, since it is smaller than the sum of its proper divisors (140729904).

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

55340880 is a wasteful number, since it uses less digits than its factorization.

55340880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32964 (or 32958 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 55340880 is about 7439.1451121752. The cubic root of 55340880 is about 381.0792954319.

The spelling of 55340880 in words is "fifty-five million, three hundred forty thousand, eight hundred eighty".