23553973 has 2 divisors, whose sum is σ = 23553974. Its totient is φ = 23553972.

The previous prime is 23553953. The next prime is 23553979. The reversal of 23553973 is 37935532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17288964 + 6265009 = 4158^2 + 2503^2 .

It is a cyclic number.

It is not a de Polignac number, because 23553973 - 2⁹ = 23553461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23553979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11776986 + 11776987.

It is an arithmetic number, because the mean of its divisors is an integer number (11776987).

Almost surely, 2^23553973 is an apocalyptic number.

It is an amenable number.

23553973 is a deficient number, since it is larger than the sum of its proper divisors (1).

23553973 is an equidigital number, since it uses as much as digits as its factorization.

23553973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 37.

The square root of 23553973 is about 4853.2435545725. The cubic root of 23553973 is about 286.6518337076.

It can be divided in two parts, 2355 and 3973, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 23553973 in words is "twenty-three million, five hundred fifty-three thousand, nine hundred seventy-three".