22401751 has 4 divisors (see below), whose sum is σ = 22878432. Its totient is φ = 21925072.

The previous prime is 22401727. The next prime is 22401763. The reversal of 22401751 is 15710422.

It is a happy number.

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 22401751 - 2⁵ = 22401719 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 (22401721) 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, 238270 + ... + 238363.

It is an arithmetic number, because the mean of its divisors is an integer number (5719608).

Almost surely, 2^22401751 is an apocalyptic number.

22401751 is a deficient number, since it is larger than the sum of its proper divisors (476681).

22401751 is an equidigital number, since it uses as much as digits as its factorization.

22401751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476680.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 22401751 is about 4733.0488060023. The cubic root of 22401751 is about 281.8992942222.

The spelling of 22401751 in words is "twenty-two million, four hundred one thousand, seven hundred fifty-one".