23039551 has 2 divisors, whose sum is σ = 23039552. Its totient is φ = 23039550.

The previous prime is 23039531. The next prime is 23039557. The reversal of 23039551 is 15593032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23039551 - 2¹¹ = 23037503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23039557) 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, 11519775 + 11519776.

It is an arithmetic number, because the mean of its divisors is an integer number (11519776).

Almost surely, 2^23039551 is an apocalyptic number.

23039551 is a deficient number, since it is larger than the sum of its proper divisors (1).

23039551 is an equidigital number, since it uses as much as digits as its factorization.

23039551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 23039551 is about 4799.9532289388. The cubic root of 23039551 is about 284.5496159154.

The spelling of 23039551 in words is "twenty-three million, thirty-nine thousand, five hundred fifty-one".