91501063 has 2 divisors, whose sum is σ = 91501064. Its totient is φ = 91501062.

The previous prime is 91501027. The next prime is 91501073. The reversal of 91501063 is 36010519.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91501063 - 2⁹ = 91500551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91501073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45750531 + 45750532.

It is an arithmetic number, because the mean of its divisors is an integer number (45750532).

Almost surely, 2^91501063 is an apocalyptic number.

91501063 is a deficient number, since it is larger than the sum of its proper divisors (1).

91501063 is an equidigital number, since it uses as much as digits as its factorization.

91501063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 91501063 is about 9565.6187985932. The cubic root of 91501063 is about 450.6181841302.

The spelling of 91501063 in words is "ninety-one million, five hundred one thousand, sixty-three".