91395001 has 4 divisors (see below), whose sum is σ = 92300004. Its totient is φ = 90490000.

The previous prime is 91394977. The next prime is 91395047. The reversal of 91395001 is 10059319.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89321401 + 2073600 = 9451^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 91395001 - 2⁹ = 91394489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91395091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452350 + ... + 452551.

It is an arithmetic number, because the mean of its divisors is an integer number (23075001).

Almost surely, 2^91395001 is an apocalyptic number.

It is an amenable number.

91395001 is a deficient number, since it is larger than the sum of its proper divisors (905003).

91395001 is a wasteful number, since it uses less digits than its factorization.

91395001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905002.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 91395001 is about 9560.0732737778. The cubic root of 91395001 is about 450.4440078510. Note that the first 3 decimals are identical.

The spelling of 91395001 in words is "ninety-one million, three hundred ninety-five thousand, one".