23403559 has 2 divisors, whose sum is σ = 23403560. Its totient is φ = 23403558.

The previous prime is 23403533. The next prime is 23403607. The reversal of 23403559 is 95530432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23403559 - 2⁷ = 23403431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23403559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23403059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701779 + 11701780.

It is an arithmetic number, because the mean of its divisors is an integer number (11701780).

Almost surely, 2^23403559 is an apocalyptic number.

23403559 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403559 is an equidigital number, since it uses as much as digits as its factorization.

23403559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 23403559 is about 4837.7225013430. The cubic root of 23403559 is about 286.0403508034.

The spelling of 23403559 in words is "twenty-three million, four hundred three thousand, five hundred fifty-nine".