23334561 has 14 divisors (see below), whose sum is σ = 34986930. Its totient is φ = 15555888.

The previous prime is 23334539. The next prime is 23334587. The reversal of 23334561 is 16543332.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 11390625 = 3456^2 + 3375^2 .

It is not a de Polignac number, because 23334561 - 2⁷ = 23334433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23334511) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15276 + ... + 16733.

Almost surely, 2^23334561 is an apocalyptic number.

It is an amenable number.

23334561 is a deficient number, since it is larger than the sum of its proper divisors (11652369).

23334561 is an frugal number, since it uses more digits than its factorization.

23334561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32027 (or 32012 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 23334561 is about 4830.5859892978. The cubic root of 23334561 is about 285.7589742361.

Adding to 23334561 its reverse (16543332), we get a palindrome (39877893).

The spelling of 23334561 in words is "twenty-three million, three hundred thirty-four thousand, five hundred sixty-one".