22032157 has 4 divisors (see below), whose sum is σ = 25179616. Its totient is φ = 18884700.

The previous prime is 22032149. The next prime is 22032161. The reversal of 22032157 is 75123022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22032157 - 2³ = 22032149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22032167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1573719 + ... + 1573732.

It is an arithmetic number, because the mean of its divisors is an integer number (6294904).

Almost surely, 2^22032157 is an apocalyptic number.

It is an amenable number.

22032157 is a deficient number, since it is larger than the sum of its proper divisors (3147459).

22032157 is an equidigital number, since it uses as much as digits as its factorization.

22032157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147458.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22032157 is about 4693.8424558138. The cubic root of 22032157 is about 280.3403895999.

Adding to 22032157 its reverse (75123022), we get a palindrome (97155179).

The spelling of 22032157 in words is "twenty-two million, thirty-two thousand, one hundred fifty-seven".