22701251 has 4 divisors (see below), whose sum is σ = 22713432. Its totient is φ = 22689072.

The previous prime is 22701241. The next prime is 22701271. The reversal of 22701251 is 15210722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22701251 - 2⁶ = 22701187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22701241) 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, 2645 + ... + 7238.

It is an arithmetic number, because the mean of its divisors is an integer number (5678358).

Almost surely, 2^22701251 is an apocalyptic number.

22701251 is a deficient number, since it is larger than the sum of its proper divisors (12181).

22701251 is an equidigital number, since it uses as much as digits as its factorization.

22701251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 22701251 is about 4764.5829828013. The cubic root of 22701251 is about 283.1500201401.

Adding to 22701251 its reverse (15210722), we get a palindrome (37911973).

The spelling of 22701251 in words is "twenty-two million, seven hundred one thousand, two hundred fifty-one".