22055157 has 6 divisors (see below), whose sum is σ = 31857462. Its totient is φ = 14703432.

The previous prime is 22055149. The next prime is 22055191. The reversal of 22055157 is 75155022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20875761 + 1179396 = 4569^2 + 1086^2 .

It is not a de Polignac number, because 22055157 - 2³ = 22055149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22055157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22055057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1225278 + ... + 1225295.

It is an arithmetic number, because the mean of its divisors is an integer number (5309577).

Almost surely, 2^22055157 is an apocalyptic number.

It is an amenable number.

22055157 is a deficient number, since it is larger than the sum of its proper divisors (9802305).

22055157 is a wasteful number, since it uses less digits than its factorization.

22055157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450579 (or 2450576 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 22055157 is about 4696.2918350545. The cubic root of 22055157 is about 280.4379074624.

The spelling of 22055157 in words is "twenty-two million, fifty-five thousand, one hundred fifty-seven".