55222943 has 4 divisors (see below), whose sum is σ = 55355160. Its totient is φ = 55090728.

The previous prime is 55222901. The next prime is 55222957. The reversal of 55222943 is 34922255.

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 55222943 - 2¹⁴ = 55206559 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 (55222043) 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, 65480 + ... + 66317.

It is an arithmetic number, because the mean of its divisors is an integer number (13838790).

Almost surely, 2^55222943 is an apocalyptic number.

55222943 is a deficient number, since it is larger than the sum of its proper divisors (132217).

55222943 is a wasteful number, since it uses less digits than its factorization.

55222943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132216.

The product of its digits is 21600, while the sum is 32.

The square root of 55222943 is about 7431.2140999974. The cubic root of 55222943 is about 380.8083967582.

It can be divided in two parts, 55222 and 943, that added together give a palindrome (56165).

The spelling of 55222943 in words is "fifty-five million, two hundred twenty-two thousand, nine hundred forty-three".