22157659 has 2 divisors, whose sum is σ = 22157660. Its totient is φ = 22157658.

The previous prime is 22157623. The next prime is 22157677. The reversal of 22157659 is 95675122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22157659 - 2¹¹ = 22155611 is a prime.

It is not a weakly prime, because it can be changed into another prime (22157689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11078829 + 11078830.

It is an arithmetic number, because the mean of its divisors is an integer number (11078830).

Almost surely, 2^22157659 is an apocalyptic number.

22157659 is a deficient number, since it is larger than the sum of its proper divisors (1).

22157659 is an equidigital number, since it uses as much as digits as its factorization.

22157659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 22157659 is about 4707.1922629100. The cubic root of 22157659 is about 280.8716840049.

The spelling of 22157659 in words is "twenty-two million, one hundred fifty-seven thousand, six hundred fifty-nine".