22048997 has 4 divisors (see below), whose sum is σ = 22085580. Its totient is φ = 22012416.

The previous prime is 22048951. The next prime is 22049009. The reversal of 22048997 is 79984022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79984022 = 2 ⋅39992011.

It can be written as a sum of positive squares in 2 ways, for example, as 8755681 + 13293316 = 2959^2 + 3646^2 .

It is a cyclic number.

It is not a de Polignac number, because 22048997 - 2¹⁰ = 22047973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22048907) 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 3 ways as a sum of consecutive naturals, for example, 17372 + ... + 18597.

It is an arithmetic number, because the mean of its divisors is an integer number (5521395).

Almost surely, 2^22048997 is an apocalyptic number.

It is an amenable number.

22048997 is a deficient number, since it is larger than the sum of its proper divisors (36583).

22048997 is an equidigital number, since it uses as much as digits as its factorization.

22048997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36582.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 22048997 is about 4695.6359526692. The cubic root of 22048997 is about 280.4117962848.

The spelling of 22048997 in words is "twenty-two million, forty-eight thousand, nine hundred ninety-seven".