23551361 has 2 divisors, whose sum is σ = 23551362. Its totient is φ = 23551360.

The previous prime is 23551357. The next prime is 23551369. The reversal of 23551361 is 16315532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23464336 + 87025 = 4844^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 23551361 - 2² = 23551357 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23551361.

It is not a weakly prime, because it can be changed into another prime (23551369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775680 + 11775681.

It is an arithmetic number, because the mean of its divisors is an integer number (11775681).

Almost surely, 2^23551361 is an apocalyptic number.

It is an amenable number.

23551361 is a deficient number, since it is larger than the sum of its proper divisors (1).

23551361 is an equidigital number, since it uses as much as digits as its factorization.

23551361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 26.

The square root of 23551361 is about 4852.9744487273. The cubic root of 23551361 is about 286.6412373032.

Adding to 23551361 its reverse (16315532), we get a palindrome (39866893).

The spelling of 23551361 in words is "twenty-three million, five hundred fifty-one thousand, three hundred sixty-one".