91530001 has 2 divisors, whose sum is σ = 91530002. Its totient is φ = 91530000.

The previous prime is 91529987. The next prime is 91530013. The reversal of 91530001 is 10003519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70963776 + 20566225 = 8424^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 91530001 - 2⁷ = 91529873 is a prime.

It is not a weakly prime, because it can be changed into another prime (91530301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45765000 + 45765001.

It is an arithmetic number, because the mean of its divisors is an integer number (45765001).

Almost surely, 2^91530001 is an apocalyptic number.

It is an amenable number.

91530001 is a deficient number, since it is larger than the sum of its proper divisors (1).

91530001 is an equidigital number, since it uses as much as digits as its factorization.

91530001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 91530001 is about 9567.1312837235. The cubic root of 91530001 is about 450.6656830850.

The spelling of 91530001 in words is "ninety-one million, five hundred thirty thousand, one".