22750001 has 4 divisors (see below), whose sum is σ = 23483904. Its totient is φ = 22016100.

The previous prime is 22749997. The next prime is 22750003. The reversal of 22750001 is 10005722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22750001 - 2² = 22749997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22750003) 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, 366905 + ... + 366966.

It is an arithmetic number, because the mean of its divisors is an integer number (5870976).

Almost surely, 2^22750001 is an apocalyptic number.

It is an amenable number.

22750001 is a deficient number, since it is larger than the sum of its proper divisors (733903).

22750001 is an equidigital number, since it uses as much as digits as its factorization.

22750001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733902.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 22750001 is about 4769.6961119132. The cubic root of 22750001 is about 283.3525595565.

Adding to 22750001 its reverse (10005722), we get a palindrome (32755723).

The spelling of 22750001 in words is "twenty-two million, seven hundred fifty thousand, one".