22152961 has 4 divisors (see below), whose sum is σ = 22245124. Its totient is φ = 22060800.

The previous prime is 22152937. The next prime is 22152971. The reversal of 22152961 is 16925122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10042561 + 12110400 = 3169^2 + 3480^2 .

It is a cyclic number.

It is not a de Polignac number, because 22152961 - 2¹⁵ = 22120193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22152971) 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, 45720 + ... + 46201.

It is an arithmetic number, because the mean of its divisors is an integer number (5561281).

Almost surely, 2^22152961 is an apocalyptic number.

It is an amenable number.

22152961 is a deficient number, since it is larger than the sum of its proper divisors (92163).

22152961 is an equidigital number, since it uses as much as digits as its factorization.

22152961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92162.

The product of its digits is 2160, while the sum is 28.

The square root of 22152961 is about 4706.6932128619. The cubic root of 22152961 is about 280.8518319010.

The spelling of 22152961 in words is "twenty-two million, one hundred fifty-two thousand, nine hundred sixty-one".