22512401 has 8 divisors (see below), whose sum is σ = 22923264. Its totient is φ = 22105440.

The previous prime is 22512383. The next prime is 22512407. The reversal of 22512401 is 10421522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22512401 - 2⁶ = 22512337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22512401.

It is not an unprimeable number, because it can be changed into a prime (22512407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12221 + ... + 13941.

It is an arithmetic number, because the mean of its divisors is an integer number (2865408).

Almost surely, 2^22512401 is an apocalyptic number.

It is an amenable number.

22512401 is a deficient number, since it is larger than the sum of its proper divisors (410863).

22512401 is a wasteful number, since it uses less digits than its factorization.

22512401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 22512401 is about 4744.7234903627. The cubic root of 22512401 is about 282.3626648621.

Adding to 22512401 its reverse (10421522), we get a palindrome (32933923).

The spelling of 22512401 in words is "twenty-two million, five hundred twelve thousand, four hundred one".