22775251 has 4 divisors (see below), whose sum is σ = 23304952. Its totient is φ = 22245552.

The previous prime is 22775231. The next prime is 22775261. The reversal of 22775251 is 15257722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22775251 - 2¹¹ = 22773203 is a prime.

It is a super-2 number, since 2×22775251² = 1037424116226002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22775201) 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, 264786 + ... + 264871.

It is an arithmetic number, because the mean of its divisors is an integer number (5826238).

Almost surely, 2^22775251 is an apocalyptic number.

22775251 is a deficient number, since it is larger than the sum of its proper divisors (529701).

22775251 is an equidigital number, since it uses as much as digits as its factorization.

22775251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529700.

The product of its digits is 9800, while the sum is 31.

The square root of 22775251 is about 4772.3422970277. The cubic root of 22775251 is about 283.4573508604.

The spelling of 22775251 in words is "twenty-two million, seven hundred seventy-five thousand, two hundred fifty-one".