55622239 has 4 divisors (see below), whose sum is σ = 55698856. Its totient is φ = 55545624.

The previous prime is 55622227. The next prime is 55622267. The reversal of 55622239 is 93222655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55622239 - 2⁷ = 55622111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55622219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37209 + ... + 38674.

It is an arithmetic number, because the mean of its divisors is an integer number (13924714).

Almost surely, 2^55622239 is an apocalyptic number.

55622239 is a deficient number, since it is larger than the sum of its proper divisors (76617).

55622239 is an equidigital number, since it uses as much as digits as its factorization.

55622239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76616.

The product of its digits is 32400, while the sum is 34.

The square root of 55622239 is about 7458.0318449307. The cubic root of 55622239 is about 381.7240201202.

The spelling of 55622239 in words is "fifty-five million, six hundred twenty-two thousand, two hundred thirty-nine".