22758121 has 8 divisors (see below), whose sum is σ = 24195240. Its totient is φ = 21331968.

The previous prime is 22758119. The next prime is 22758133. The reversal of 22758121 is 12185722.

It can be written as a sum of positive squares in 4 ways, for example, as 19678096 + 3080025 = 4436^2 + 1755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22758121 - 2¹ = 22758119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22758121.

It is not an unprimeable number, because it can be changed into a prime (22758161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (3024405).

Almost surely, 2^22758121 is an apocalyptic number.

It is an amenable number.

22758121 is a deficient number, since it is larger than the sum of its proper divisors (1437119).

22758121 is a wasteful number, since it uses less digits than its factorization.

22758121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483.

The product of its digits is 2240, while the sum is 28.

The square root of 22758121 is about 4770.5472432416. The cubic root of 22758121 is about 283.3862672342.

The spelling of 22758121 in words is "twenty-two million, seven hundred fifty-eight thousand, one hundred twenty-one".