23045261 has 2 divisors, whose sum is σ = 23045262. Its totient is φ = 23045260.

The previous prime is 23045249. The next prime is 23045263. The reversal of 23045261 is 16254032.

23045261 = 3394² + 3395².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 11519236 = 3395^2 + 3394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23045261 is a prime.

Together with 23045263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23045263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11522630 + 11522631.

It is an arithmetic number, because the mean of its divisors is an integer number (11522631).

Almost surely, 2^23045261 is an apocalyptic number.

23045261 is the 3395-th centered square number.

It is an amenable number.

23045261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23045261 is an equidigital number, since it uses as much as digits as its factorization.

23045261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23045261 is about 4800.5479895529. The cubic root of 23045261 is about 284.5731210624.

Adding to 23045261 its reverse (16254032), we get a palindrome (39299293).

The spelling of 23045261 in words is "twenty-three million, forty-five thousand, two hundred sixty-one".