55110780 has 60 divisors (see below), whose sum is σ = 172889640. Its totient is φ = 14695776.

The previous prime is 55110763. The next prime is 55110793. The reversal of 55110780 is 8701155.

55110780 is a `hidden beast` number, since 551 + 107 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15390 + ... + 18629.

It is an arithmetic number, because the mean of its divisors is an integer number (2881494).

Almost surely, 2^55110780 is an apocalyptic number.

It is an amenable number.

55110780 is an abundant number, since it is smaller than the sum of its proper divisors (117778860).

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

55110780 is a wasteful number, since it uses less digits than its factorization.

55110780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040 (or 34029 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 55110780 is about 7423.6635160815. The cubic root of 55110780 is about 380.5504027655.

The spelling of 55110780 in words is "fifty-five million, one hundred ten thousand, seven hundred eighty".