22951405 has 4 divisors (see below), whose sum is σ = 27541692. Its totient is φ = 18361120.

The previous prime is 22951399. The next prime is 22951421. The reversal of 22951405 is 50415922.

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 17656804 + 5294601 = 4202^2 + 2301^2 .

It is not a de Polignac number, because 22951405 - 2¹¹ = 22949357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295136 + ... + 2295145.

It is an arithmetic number, because the mean of its divisors is an integer number (6885423).

Almost surely, 2^22951405 is an apocalyptic number.

It is an amenable number.

22951405 is a deficient number, since it is larger than the sum of its proper divisors (4590287).

22951405 is an equidigital number, since it uses as much as digits as its factorization.

22951405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590286.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 22951405 is about 4790.7624654120. The cubic root of 22951405 is about 284.1862702177.

The spelling of 22951405 in words is "twenty-two million, nine hundred fifty-one thousand, four hundred five".