91002059 has 2 divisors, whose sum is σ = 91002060. Its totient is φ = 91002058.

The previous prime is 91001993. The next prime is 91002101. The reversal of 91002059 is 95020019.

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-91002059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91002859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45501029 + 45501030.

It is an arithmetic number, because the mean of its divisors is an integer number (45501030).

Almost surely, 2^91002059 is an apocalyptic number.

91002059 is a deficient number, since it is larger than the sum of its proper divisors (1).

91002059 is an equidigital number, since it uses as much as digits as its factorization.

91002059 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 26.

The square root of 91002059 is about 9539.4999344829. The cubic root of 91002059 is about 449.7975369054.

The spelling of 91002059 in words is "ninety-one million, two thousand, fifty-nine".