23270561 has 2 divisors, whose sum is σ = 23270562. Its totient is φ = 23270560.

The previous prime is 23270539. The next prime is 23270581. The reversal of 23270561 is 16507232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 9728161 = 3680^2 + 3119^2 .

It is a cyclic number.

It is not a de Polignac number, because 23270561 - 2²² = 19076257 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 23270561.

It is not a weakly prime, because it can be changed into another prime (23270531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11635280 + 11635281.

It is an arithmetic number, because the mean of its divisors is an integer number (11635281).

Almost surely, 2^23270561 is an apocalyptic number.

It is an amenable number.

23270561 is a deficient number, since it is larger than the sum of its proper divisors (1).

23270561 is an equidigital number, since it uses as much as digits as its factorization.

23270561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 23270561 is about 4823.9569857120. The cubic root of 23270561 is about 285.4974834232.

Adding to 23270561 its reverse (16507232), we get a palindrome (39777793).

The spelling of 23270561 in words is "twenty-three million, two hundred seventy thousand, five hundred sixty-one".