22755731 has 2 divisors, whose sum is σ = 22755732. Its totient is φ = 22755730.

The previous prime is 22755721. The next prime is 22755739. The reversal of 22755731 is 13755722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22755731 - 2²² = 18561427 is a prime.

It is a super-2 number, since 2×22755731² = 1035646586688722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22755739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11377865 + 11377866.

It is an arithmetic number, because the mean of its divisors is an integer number (11377866).

Almost surely, 2^22755731 is an apocalyptic number.

22755731 is a deficient number, since it is larger than the sum of its proper divisors (1).

22755731 is an equidigital number, since it uses as much as digits as its factorization.

22755731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14700, while the sum is 32.

The square root of 22755731 is about 4770.2967412940. The cubic root of 22755731 is about 283.3763467185.

Subtracting from 22755731 its reverse (13755722), we obtain a palindrome (9000009).

The spelling of 22755731 in words is "twenty-two million, seven hundred fifty-five thousand, seven hundred thirty-one".