22163557 has 16 divisors (see below), whose sum is σ = 25553920. Its totient is φ = 19051200.

The previous prime is 22163539. The next prime is 22163579. The reversal of 22163557 is 75536122.

It is a cyclic number.

It is not a de Polignac number, because 22163557 - 2¹¹ = 22161509 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22163507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14332 + ... + 15802.

It is an arithmetic number, because the mean of its divisors is an integer number (1597120).

Almost surely, 2^22163557 is an apocalyptic number.

It is an amenable number.

22163557 is a deficient number, since it is larger than the sum of its proper divisors (3390363).

22163557 is a wasteful number, since it uses less digits than its factorization.

22163557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its digits is 12600, while the sum is 31.

The square root of 22163557 is about 4707.8187093388. The cubic root of 22163557 is about 280.8966029163.

Adding to 22163557 its reverse (75536122), we get a palindrome (97699679).

The spelling of 22163557 in words is "twenty-two million, one hundred sixty-three thousand, five hundred fifty-seven".