22162557 has 8 divisors (see below), whose sum is σ = 29579040. Its totient is φ = 14760560.

The previous prime is 22162549. The next prime is 22162561. The reversal of 22162557 is 75526122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22162557 - 2³ = 22162549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22162507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 6692.

It is an arithmetic number, because the mean of its divisors is an integer number (3697380).

Almost surely, 2^22162557 is an apocalyptic number.

It is an amenable number.

22162557 is a deficient number, since it is larger than the sum of its proper divisors (7416483).

22162557 is a wasteful number, since it uses less digits than its factorization.

22162557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243.

The product of its digits is 8400, while the sum is 30.

The square root of 22162557 is about 4707.7125018421. The cubic root of 22162557 is about 280.8923782511.

Adding to 22162557 its reverse (75526122), we get a palindrome (97688679).

The spelling of 22162557 in words is "twenty-two million, one hundred sixty-two thousand, five hundred fifty-seven".