22131455 has 16 divisors (see below), whose sum is σ = 27540480. Its totient is φ = 17061408.

The previous prime is 22131443. The next prime is 22131463. The reversal of 22131455 is 55413122.

It is a cyclic number.

It is not a de Polignac number, because 22131455 - 2⁸ = 22131199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22131455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16334 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (1721280).

Almost surely, 2^22131455 is an apocalyptic number.

22131455 is a deficient number, since it is larger than the sum of its proper divisors (5409025).

22131455 is a wasteful number, since it uses less digits than its factorization.

22131455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its digits is 1200, while the sum is 23.

The square root of 22131455 is about 4704.4080392755. The cubic root of 22131455 is about 280.7609192222.

Adding to 22131455 its reverse (55413122), we get a palindrome (77544577).

The spelling of 22131455 in words is "twenty-two million, one hundred thirty-one thousand, four hundred fifty-five".