22751147 has 2 divisors, whose sum is σ = 22751148. Its totient is φ = 22751146.

The previous prime is 22751143. The next prime is 22751153. The reversal of 22751147 is 74115722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22751147 - 2² = 22751143 is a prime.

It is a super-2 number, since 2×22751147² = 1035229379631218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22751143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11375573 + 11375574.

It is an arithmetic number, because the mean of its divisors is an integer number (11375574).

Almost surely, 2^22751147 is an apocalyptic number.

22751147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22751147 is an equidigital number, since it uses as much as digits as its factorization.

22751147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 29.

The square root of 22751147 is about 4769.8162438400. The cubic root of 22751147 is about 283.3573173084.

Adding to 22751147 its reverse (74115722), we get a palindrome (96866869).

The spelling of 22751147 in words is "twenty-two million, seven hundred fifty-one thousand, one hundred forty-seven".