23521273 has 2 divisors, whose sum is σ = 23521274. Its totient is φ = 23521272.

The previous prime is 23521271. The next prime is 23521279. The reversal of 23521273 is 37212532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22963264 + 558009 = 4792^2 + 747^2 .

It is a cyclic number.

It is not a de Polignac number, because 23521273 - 2¹ = 23521271 is a prime.

Together with 23521271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23521271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11760636 + 11760637.

It is an arithmetic number, because the mean of its divisors is an integer number (11760637).

Almost surely, 2^23521273 is an apocalyptic number.

It is an amenable number.

23521273 is a deficient number, since it is larger than the sum of its proper divisors (1).

23521273 is an equidigital number, since it uses as much as digits as its factorization.

23521273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 23521273 is about 4849.8735035050. The cubic root of 23521273 is about 286.5191192810.

The spelling of 23521273 in words is "twenty-three million, five hundred twenty-one thousand, two hundred seventy-three".