55316080 has 20 divisors (see below), whose sum is σ = 128610072. Its totient is φ = 22126400.

The previous prime is 55316077. The next prime is 55316089. The reversal of 55316080 is 8061355.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55316089) 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 3 ways as a sum of consecutive naturals, for example, 345646 + ... + 345805.

Almost surely, 2^55316080 is an apocalyptic number.

It is an amenable number.

55316080 is an abundant number, since it is smaller than the sum of its proper divisors (73293992).

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

55316080 is a wasteful number, since it uses less digits than its factorization.

55316080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691464 (or 691458 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55316080 is about 7437.4780671946. The cubic root of 55316080 is about 381.0223623618.

It can be divided in two parts, 5531 and 6080, that added together give a palindrome (11611).

The spelling of 55316080 in words is "fifty-five million, three hundred sixteen thousand, eighty".