22455731 has 2 divisors, whose sum is σ = 22455732. Its totient is φ = 22455730.

The previous prime is 22455721. The next prime is 22455737. The reversal of 22455731 is 13755422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22455731 is a prime.

It is a super-3 number, since 3×22455731³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22455694 and 22455703.

It is not a weakly prime, because it can be changed into another prime (22455737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11227865 + 11227866.

It is an arithmetic number, because the mean of its divisors is an integer number (11227866).

Almost surely, 2^22455731 is an apocalyptic number.

22455731 is a deficient number, since it is larger than the sum of its proper divisors (1).

22455731 is an equidigital number, since it uses as much as digits as its factorization.

22455731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 29.

The square root of 22455731 is about 4738.7478303873. The cubic root of 22455731 is about 282.1255372190.

It can be divided in two parts, 224 and 55731, that added together give a palindrome (55955).

The spelling of 22455731 in words is "twenty-two million, four hundred fifty-five thousand, seven hundred thirty-one".