55940280 has 64 divisors (see below), whose sum is σ = 183081600. Its totient is φ = 13560960.

The previous prime is 55940279. The next prime is 55940303. The reversal of 55940280 is 8204955.

55940280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 15 ways as a sum of consecutive naturals, for example, 19870 + ... + 22509.

It is an arithmetic number, because the mean of its divisors is an integer number (2860650).

Almost surely, 2^55940280 is an apocalyptic number.

It is an amenable number.

55940280 is an abundant number, since it is smaller than the sum of its proper divisors (127141320).

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

55940280 is a wasteful number, since it uses less digits than its factorization.

55940280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42404 (or 42400 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55940280 is about 7479.3234988199. The cubic root of 55940280 is about 382.4501878830.

The spelling of 55940280 in words is "fifty-five million, nine hundred forty thousand, two hundred eighty".