55374220 has 24 divisors (see below), whose sum is σ = 126857808. Its totient is φ = 20136000.

The previous prime is 55374217. The next prime is 55374247. The reversal of 55374220 is 2247355.

55374220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 125631 + ... + 126070.

It is an arithmetic number, because the mean of its divisors is an integer number (5285742).

Almost surely, 2^55374220 is an apocalyptic number.

It is an amenable number.

55374220 is an abundant number, since it is smaller than the sum of its proper divisors (71483588).

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

55374220 is a wasteful number, since it uses less digits than its factorization.

55374220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251721 (or 251719 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 55374220 is about 7441.3856236591. The cubic root of 55374220 is about 381.1558068834.

The spelling of 55374220 in words is "fifty-five million, three hundred seventy-four thousand, two hundred twenty".