23355261 has 6 divisors (see below), whose sum is σ = 33735390. Its totient is φ = 15570168.

The previous prime is 23355257. The next prime is 23355271. The reversal of 23355261 is 16255332.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 10929636 = 3525^2 + 3306^2 .

It is not a de Polignac number, because 23355261 - 2² = 23355257 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23355271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1297506 + ... + 1297523.

It is an arithmetic number, because the mean of its divisors is an integer number (5622565).

Almost surely, 2^23355261 is an apocalyptic number.

It is an amenable number.

23355261 is a deficient number, since it is larger than the sum of its proper divisors (10380129).

23355261 is a wasteful number, since it uses less digits than its factorization.

23355261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595035 (or 2595032 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 23355261 is about 4832.7281115329. The cubic root of 23355261 is about 285.8434478274.

The spelling of 23355261 in words is "twenty-three million, three hundred fifty-five thousand, two hundred sixty-one".