23415563 has 2 divisors, whose sum is σ = 23415564. Its totient is φ = 23415562.

The previous prime is 23415533. The next prime is 23415583. The reversal of 23415563 is 36551432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23415563 - 2¹⁴ = 23399179 is a prime.

It is not a weakly prime, because it can be changed into another prime (23415533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11707781 + 11707782.

It is an arithmetic number, because the mean of its divisors is an integer number (11707782).

Almost surely, 2^23415563 is an apocalyptic number.

23415563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23415563 is an equidigital number, since it uses as much as digits as its factorization.

23415563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 23415563 is about 4838.9630087447. The cubic root of 23415563 is about 286.0892470915.

Adding to 23415563 its reverse (36551432), we get a palindrome (59966995).

The spelling of 23415563 in words is "twenty-three million, four hundred fifteen thousand, five hundred sixty-three".