91260001 has 24 divisors (see below), whose sum is σ = 111220224. Its totient is φ = 74571840.

The previous prime is 91259969. The next prime is 91260023. The reversal of 91260001 is 10006219.

It is not a de Polignac number, because 91260001 - 2⁵ = 91259969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91260101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110476 + ... + 111298.

It is an arithmetic number, because the mean of its divisors is an integer number (4634176).

Almost surely, 2^91260001 is an apocalyptic number.

It is an amenable number.

91260001 is a deficient number, since it is larger than the sum of its proper divisors (19960223).

91260001 is a wasteful number, since it uses less digits than its factorization.

91260001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 91260001 is about 9553.0100491939. The cubic root of 91260001 is about 450.2221142176. Note that the first 3 decimals are identical.

The spelling of 91260001 in words is "ninety-one million, two hundred sixty thousand, one".