22152947 has 4 divisors (see below), whose sum is σ = 22483656. Its totient is φ = 21822240.

The previous prime is 22152937. The next prime is 22152971. The reversal of 22152947 is 74925122.

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 22152947 - 2¹⁶ = 22087411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22152937) 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, 165254 + ... + 165387.

It is an arithmetic number, because the mean of its divisors is an integer number (5620914).

Almost surely, 2^22152947 is an apocalyptic number.

22152947 is a deficient number, since it is larger than the sum of its proper divisors (330709).

22152947 is an equidigital number, since it uses as much as digits as its factorization.

22152947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330708.

The product of its digits is 10080, while the sum is 32.

The square root of 22152947 is about 4706.6917256179. The cubic root of 22152947 is about 280.8517727377.

The spelling of 22152947 in words is "twenty-two million, one hundred fifty-two thousand, nine hundred forty-seven".