55148420 has 24 divisors (see below), whose sum is σ = 116011224. Its totient is φ = 22021376.

The previous prime is 55148413. The next prime is 55148447. The reversal of 55148420 is 2484155.

It can be written as a sum of positive squares in 4 ways, for example, as 10445824 + 44702596 = 3232^2 + 6686^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11504 + ... + 15576.

It is an arithmetic number, because the mean of its divisors is an integer number (4833801).

Almost surely, 2^55148420 is an apocalyptic number.

It is an amenable number.

55148420 is an abundant number, since it is smaller than the sum of its proper divisors (60862804).

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

55148420 is a wasteful number, since it uses less digits than its factorization.

55148420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759 (or 4757 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 55148420 is about 7426.1982198161. The cubic root of 55148420 is about 380.6370201652.

The spelling of 55148420 in words is "fifty-five million, one hundred forty-eight thousand, four hundred twenty".