55801080 has 48 divisors (see below), whose sum is σ = 181354680. Its totient is φ = 14880192.

The previous prime is 55801063. The next prime is 55801087. The reversal of 55801080 is 8010855.

55801080 is a `hidden beast` number, since 5 + 580 + 1 + 0 + 80 = 666.

It is a super-2 number, since 2×55801080² = 6227521058332800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55801087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77142 + ... + 77861.

Almost surely, 2^55801080 is an apocalyptic number.

It is an amenable number.

55801080 is an abundant number, since it is smaller than the sum of its proper divisors (125553600).

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

55801080 is a wasteful number, since it uses less digits than its factorization.

55801080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155020 (or 155013 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 55801080 is about 7470.0120481831. The cubic root of 55801080 is about 382.1326987971.

It can be divided in two parts, 5 and 5801080, that added together give a palindrome (5801085).

The spelling of 55801080 in words is "fifty-five million, eight hundred one thousand, eighty".