22750521 has 4 divisors (see below), whose sum is σ = 30334032. Its totient is φ = 15167012.

The previous prime is 22750513. The next prime is 22750561. The reversal of 22750521 is 12505722.

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 22750521 - 2³ = 22750513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22750491 and 22750500.

It is not an unprimeable number, because it can be changed into a prime (22750561) 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 3 ways as a sum of consecutive naturals, for example, 3791751 + ... + 3791756.

It is an arithmetic number, because the mean of its divisors is an integer number (7583508).

Almost surely, 2^22750521 is an apocalyptic number.

It is an amenable number.

22750521 is a deficient number, since it is larger than the sum of its proper divisors (7583511).

22750521 is an equidigital number, since it uses as much as digits as its factorization.

22750521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7583510.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22750521 is about 4769.7506224120. The cubic root of 22750521 is about 283.3547184166.

The spelling of 22750521 in words is "twenty-two million, seven hundred fifty thousand, five hundred twenty-one".