22152641 has 4 divisors (see below), whose sum is σ = 25317312. Its totient is φ = 18987972.

The previous prime is 22152601. The next prime is 22152643. The reversal of 22152641 is 14625122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14625122 = 2 ⋅7312561.

It is a cyclic number.

It is not a de Polignac number, because 22152641 - 2¹⁸ = 21890497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22152643) 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, 1582325 + ... + 1582338.

It is an arithmetic number, because the mean of its divisors is an integer number (6329328).

Almost surely, 2^22152641 is an apocalyptic number.

It is an amenable number.

22152641 is a deficient number, since it is larger than the sum of its proper divisors (3164671).

22152641 is an equidigital number, since it uses as much as digits as its factorization.

22152641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164670.

The product of its digits is 960, while the sum is 23.

The square root of 22152641 is about 4706.6592185966. The cubic root of 22152641 is about 280.8504795909.

Adding to 22152641 its reverse (14625122), we get a palindrome (36777763).

The spelling of 22152641 in words is "twenty-two million, one hundred fifty-two thousand, six hundred forty-one".