23533261 has 2 divisors, whose sum is σ = 23533262. Its totient is φ = 23533260.

The previous prime is 23533249. The next prime is 23533283. The reversal of 23533261 is 16233532.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13003236 + 10530025 = 3606^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 23533261 - 2¹⁷ = 23402189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23533361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11766630 + 11766631.

It is an arithmetic number, because the mean of its divisors is an integer number (11766631).

Almost surely, 2^23533261 is an apocalyptic number.

It is an amenable number.

23533261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23533261 is an equidigital number, since it uses as much as digits as its factorization.

23533261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 23533261 is about 4851.1092545932. The cubic root of 23533261 is about 286.5677873928.

Adding to 23533261 its reverse (16233532), we get a palindrome (39766793).

The spelling of 23533261 in words is "twenty-three million, five hundred thirty-three thousand, two hundred sixty-one".