55223745 has 16 divisors (see below), whose sum is σ = 89678400. Its totient is φ = 29012544.

The previous prime is 55223737. The next prime is 55223767. The reversal of 55223745 is 54732255.

It is not a de Polignac number, because 55223745 - 2³ = 55223737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26470 + ... + 28479.

It is an arithmetic number, because the mean of its divisors is an integer number (5604900).

Almost surely, 2^55223745 is an apocalyptic number.

It is an amenable number.

55223745 is a deficient number, since it is larger than the sum of its proper divisors (34454655).

55223745 is a wasteful number, since it uses less digits than its factorization.

55223745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55024.

The product of its digits is 42000, while the sum is 33.

The square root of 55223745 is about 7431.2680613742. The cubic root of 55223745 is about 380.8102402363.

The spelling of 55223745 in words is "fifty-five million, two hundred twenty-three thousand, seven hundred forty-five".