91010022 has 8 divisors (see below), whose sum is σ = 182020056. Its totient is φ = 30336672.

The previous prime is 91010021. The next prime is 91010041. The reversal of 91010022 is 22001019.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

91010022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 91009983 and 91010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91010021) 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, 7584163 + ... + 7584174.

It is an arithmetic number, because the mean of its divisors is an integer number (22752507).

Almost surely, 2^91010022 is an apocalyptic number.

91010022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91010022 is a wasteful number, since it uses less digits than its factorization.

91010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15168342.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 91010022 is about 9539.9172952390. The cubic root of 91010022 is about 449.8106561445.

The spelling of 91010022 in words is "ninety-one million, ten thousand, twenty-two".