22156157 has 8 divisors (see below), whose sum is σ = 22548096. Its totient is φ = 21766752.

The previous prime is 22156139. The next prime is 22156159. The reversal of 22156157 is 75165122.

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 22156157 - 2⁸ = 22155901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156159) 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, 26378 + ... + 27204.

It is an arithmetic number, because the mean of its divisors is an integer number (2818512).

Almost surely, 2^22156157 is an apocalyptic number.

It is an amenable number.

22156157 is a deficient number, since it is larger than the sum of its proper divisors (391939).

22156157 is an equidigital number, since it uses as much as digits as its factorization.

22156157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267.

The product of its digits is 4200, while the sum is 29.

The square root of 22156157 is about 4707.0327171160. The cubic root of 22156157 is about 280.8653373837.

The spelling of 22156157 in words is "twenty-two million, one hundred fifty-six thousand, one hundred fifty-seven".