90126563 has 2 divisors, whose sum is σ = 90126564. Its totient is φ = 90126562.

The previous prime is 90126527. The next prime is 90126593. The reversal of 90126563 is 36562109.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90126563 is a prime.

It is equal to p_5223929 and since 90126563 and 5223929 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (90126593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45063281 + 45063282.

It is an arithmetic number, because the mean of its divisors is an integer number (45063282).

Almost surely, 2^90126563 is an apocalyptic number.

90126563 is a deficient number, since it is larger than the sum of its proper divisors (1).

90126563 is an equidigital number, since it uses as much as digits as its factorization.

90126563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 90126563 is about 9493.5010928529. The cubic root of 90126563 is about 448.3504429408.

The spelling of 90126563 in words is "ninety million, one hundred twenty-six thousand, five hundred sixty-three".