22165007 has 4 divisors (see below), whose sum is σ = 22495896. Its totient is φ = 21834120.

The previous prime is 22164997. The next prime is 22165009. The reversal of 22165007 is 70056122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22165007 - 2¹⁸ = 21902863 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 (22165009) 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, 165344 + ... + 165477.

It is an arithmetic number, because the mean of its divisors is an integer number (5623974).

Almost surely, 2^22165007 is an apocalyptic number.

22165007 is a deficient number, since it is larger than the sum of its proper divisors (330889).

22165007 is an equidigital number, since it uses as much as digits as its factorization.

22165007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330888.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 22165007 is about 4707.9727059532. The cubic root of 22165007 is about 280.9027284552.

The spelling of 22165007 in words is "twenty-two million, one hundred sixty-five thousand, seven".