91096556 has 12 divisors (see below), whose sum is σ = 159584040. Its totient is φ = 45501120.

The previous prime is 91096541. The next prime is 91096571. The reversal of 91096556 is 65569019.

91096556 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (91096541) and next prime (91096571).

It is a super-2 number, since 2×91096556² = 16597165030122272, which contains 22 as substring.

91096556 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7250 + ... + 15321.

It is an arithmetic number, because the mean of its divisors is an integer number (13298670).

Almost surely, 2^91096556 is an apocalyptic number.

It is an amenable number.

91096556 is a deficient number, since it is larger than the sum of its proper divisors (68487484).

91096556 is a wasteful number, since it uses less digits than its factorization.

91096556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23584 (or 23582 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 91096556 is about 9544.4515819402. The cubic root of 91096556 is about 449.9531737283.

The spelling of 91096556 in words is "ninety-one million, ninety-six thousand, five hundred fifty-six".