22501401 has 16 divisors (see below), whose sum is σ = 32444160. Its totient is φ = 13789440.

The previous prime is 22501343. The next prime is 22501403. The reversal of 22501401 is 10410522.

It is not a de Polignac number, because 22501401 - 2⁷ = 22501273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22501403) 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, 9505 + ... + 11633.

It is an arithmetic number, because the mean of its divisors is an integer number (2027760).

Almost surely, 2^22501401 is an apocalyptic number.

It is an amenable number.

22501401 is a deficient number, since it is larger than the sum of its proper divisors (9942759).

22501401 is a wasteful number, since it uses less digits than its factorization.

22501401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 22501401 is about 4743.5641663205. The cubic root of 22501401 is about 282.3166680604.

Adding to 22501401 its reverse (10410522), we get a palindrome (32911923).

The spelling of 22501401 in words is "twenty-two million, five hundred one thousand, four hundred one".