55722146 has 16 divisors (see below), whose sum is σ = 87645888. Its totient is φ = 26518800.

The previous prime is 55722131. The next prime is 55722167. The reversal of 55722146 is 64122755.

It is a Curzon number.

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, 6836 + ... + 12576.

It is an arithmetic number, because the mean of its divisors is an integer number (5477868).

Almost surely, 2^55722146 is an apocalyptic number.

55722146 is a deficient number, since it is larger than the sum of its proper divisors (31923742).

55722146 is a wasteful number, since it uses less digits than its factorization.

55722146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977.

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

The square root of 55722146 is about 7464.7267866949. The cubic root of 55722146 is about 381.9524305046.

The spelling of 55722146 in words is "fifty-five million, seven hundred twenty-two thousand, one hundred forty-six".