22251641 has 16 divisors (see below), whose sum is σ = 24224640. Its totient is φ = 20373120.

The previous prime is 22251631. The next prime is 22251653. The reversal of 22251641 is 14615222.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22251641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22251601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84476 + ... + 84738.

It is an arithmetic number, because the mean of its divisors is an integer number (1514040).

Almost surely, 2^22251641 is an apocalyptic number.

It is an amenable number.

22251641 is a deficient number, since it is larger than the sum of its proper divisors (1972999).

22251641 is a wasteful number, since it uses less digits than its factorization.

22251641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416.

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

The square root of 22251641 is about 4717.1645084733. The cubic root of 22251641 is about 281.2682308512.

Adding to 22251641 its reverse (14615222), we get a palindrome (36866863).

The spelling of 22251641 in words is "twenty-two million, two hundred fifty-one thousand, six hundred forty-one".