22747261 has 2 divisors, whose sum is σ = 22747262. Its totient is φ = 22747260.

The previous prime is 22747217. The next prime is 22747271. The reversal of 22747261 is 16274722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14516100 + 8231161 = 3810^2 + 2869^2 .

It is a cyclic number.

It is not a de Polignac number, because 22747261 - 2¹¹ = 22745213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22747271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11373630 + 11373631.

It is an arithmetic number, because the mean of its divisors is an integer number (11373631).

Almost surely, 2^22747261 is an apocalyptic number.

It is an amenable number.

22747261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22747261 is an equidigital number, since it uses as much as digits as its factorization.

22747261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 22747261 is about 4769.4088732253. The cubic root of 22747261 is about 283.3411834811.

The spelling of 22747261 in words is "twenty-two million, seven hundred forty-seven thousand, two hundred sixty-one".