22815841 has 2 divisors, whose sum is σ = 22815842. Its totient is φ = 22815840.

The previous prime is 22815833. The next prime is 22815857. The reversal of 22815841 is 14851822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15681600 + 7134241 = 3960^2 + 2671^2 .

It is a cyclic number.

It is not a de Polignac number, because 22815841 - 2³ = 22815833 is a prime.

It is not a weakly prime, because it can be changed into another prime (22810841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11407920 + 11407921.

It is an arithmetic number, because the mean of its divisors is an integer number (11407921).

Almost surely, 2^22815841 is an apocalyptic number.

It is an amenable number.

22815841 is a deficient number, since it is larger than the sum of its proper divisors (1).

22815841 is an equidigital number, since it uses as much as digits as its factorization.

22815841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5120, while the sum is 31.

The square root of 22815841 is about 4776.5930326960. The cubic root of 22815841 is about 283.6256432696.

The spelling of 22815841 in words is "twenty-two million, eight hundred fifteen thousand, eight hundred forty-one".