22891201 has 4 divisors (see below), whose sum is σ = 23093892. Its totient is φ = 22688512.

The previous prime is 22891189. The next prime is 22891207. The reversal of 22891201 is 10219822.

22891201 = 199² + 200² + ... + 424².

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 5452225 + 17438976 = 2335^2 + 4176^2 .

It is a cyclic number.

It is not a de Polignac number, because 22891201 - 2⁷ = 22891073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22891207) 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, 101176 + ... + 101401.

It is an arithmetic number, because the mean of its divisors is an integer number (5773473).

Almost surely, 2^22891201 is an apocalyptic number.

It is an amenable number.

22891201 is a deficient number, since it is larger than the sum of its proper divisors (202691).

22891201 is a wasteful number, since it uses less digits than its factorization.

22891201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202690.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 22891201 is about 4784.4749973221. The cubic root of 22891201 is about 283.9375689325.

The spelling of 22891201 in words is "twenty-two million, eight hundred ninety-one thousand, two hundred one".