22651361 has 4 divisors (see below), whose sum is σ = 23983812. Its totient is φ = 21318912.

The previous prime is 22651337. The next prime is 22651373. The reversal of 22651361 is 16315622.

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 20566225 + 2085136 = 4535^2 + 1444^2 .

It is a cyclic number.

It is not a de Polignac number, because 22651361 - 2¹⁸ = 22389217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22651361.

It is not an unprimeable number, because it can be changed into a prime (22651331) 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, 666200 + ... + 666233.

It is an arithmetic number, because the mean of its divisors is an integer number (5995953).

Almost surely, 2^22651361 is an apocalyptic number.

It is an amenable number.

22651361 is a deficient number, since it is larger than the sum of its proper divisors (1332451).

22651361 is a wasteful number, since it uses less digits than its factorization.

22651361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332450.

The product of its digits is 2160, while the sum is 26.

The square root of 22651361 is about 4759.3445977361. The cubic root of 22651361 is about 282.9424439799.

Adding to 22651361 its reverse (16315622), we get a palindrome (38966983).

The spelling of 22651361 in words is "twenty-two million, six hundred fifty-one thousand, three hundred sixty-one".