91450017 has 6 divisors (see below), whose sum is σ = 132094482. Its totient is φ = 60966672.

The previous prime is 91449997. The next prime is 91450027. The reversal of 91450017 is 71005419.

It can be written as a sum of positive squares in only one way, i.e., 51494976 + 39955041 = 7176^2 + 6321^2 .

It is a de Polignac number, because none of the positive numbers 2^k-91450017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91450027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5080548 + ... + 5080565.

It is an arithmetic number, because the mean of its divisors is an integer number (22015747).

Almost surely, 2^91450017 is an apocalyptic number.

It is an amenable number.

91450017 is a deficient number, since it is larger than the sum of its proper divisors (40644465).

91450017 is a wasteful number, since it uses less digits than its factorization.

91450017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161119 (or 10161116 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 91450017 is about 9562.9502246953. The cubic root of 91450017 is about 450.5343725916.

The spelling of 91450017 in words is "ninety-one million, four hundred fifty thousand, seventeen".