22249547 has 2 divisors, whose sum is σ = 22249548. Its totient is φ = 22249546.

The previous prime is 22249529. The next prime is 22249553. The reversal of 22249547 is 74594222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22249547 - 2¹⁸ = 21987403 is a prime.

It is not a weakly prime, because it can be changed into another prime (22249517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11124773 + 11124774.

It is an arithmetic number, because the mean of its divisors is an integer number (11124774).

Almost surely, 2^22249547 is an apocalyptic number.

22249547 is a deficient number, since it is larger than the sum of its proper divisors (1).

22249547 is an equidigital number, since it uses as much as digits as its factorization.

22249547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 22249547 is about 4716.9425478799. The cubic root of 22249547 is about 281.2594076195.

The spelling of 22249547 in words is "twenty-two million, two hundred forty-nine thousand, five hundred forty-seven".