55722234 has 16 divisors (see below), whose sum is σ = 111528288. Its totient is φ = 18560112.

The previous prime is 55722229. The next prime is 55722241. The reversal of 55722234 is 43222755.

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, 8124 + ... + 13320.

It is an arithmetic number, because the mean of its divisors is an integer number (6970518).

Almost surely, 2^55722234 is an apocalyptic number.

55722234 is an abundant number, since it is smaller than the sum of its proper divisors (55806054).

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

55722234 is a wasteful number, since it uses less digits than its factorization.

55722234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989.

The product of its digits is 16800, while the sum is 30.

The square root of 55722234 is about 7464.7326810811. The cubic root of 55722234 is about 381.9526315725.

Adding to 55722234 its reverse (43222755), we get a palindrome (98944989).

It can be divided in two parts, 557 and 22234, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 55722234 in words is "fifty-five million, seven hundred twenty-two thousand, two hundred thirty-four".