55873220 has 48 divisors (see below), whose sum is σ = 133802928. Its totient is φ = 19415040.

The previous prime is 55873159. The next prime is 55873229. The reversal of 55873220 is 2237855.

It can be written as a sum of positive squares in 8 ways, for example, as 13075456 + 42797764 = 3616^2 + 6542^2 .

It is not an unprimeable number, because it can be changed into a prime (55873229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1901 + ... + 10740.

It is an arithmetic number, because the mean of its divisors is an integer number (2787561).

Almost surely, 2^55873220 is an apocalyptic number.

It is an amenable number.

55873220 is an abundant number, since it is smaller than the sum of its proper divisors (77929708).

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

55873220 is a wasteful number, since it uses less digits than its factorization.

55873220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12680 (or 12678 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 55873220 is about 7474.8391287037. The cubic root of 55873220 is about 382.2973024319.

The spelling of 55873220 in words is "fifty-five million, eight hundred seventy-three thousand, two hundred twenty".