91015112 has 8 divisors (see below), whose sum is σ = 170653350. Its totient is φ = 45507552.

The previous prime is 91015091. The next prime is 91015147. The reversal of 91015112 is 21151019.

It can be written as a sum of positive squares in only one way, i.e., 83649316 + 7365796 = 9146^2 + 2714^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×91015112² = 16567501224745088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5688437 + ... + 5688452.

Almost surely, 2^91015112 is an apocalyptic number.

It is an amenable number.

91015112 is a deficient number, since it is larger than the sum of its proper divisors (79638238).

91015112 is a wasteful number, since it uses less digits than its factorization.

91015112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11376895 (or 11376891 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 91015112 is about 9540.1840653103. The cubic root of 91015112 is about 449.8190416443.

The spelling of 91015112 in words is "ninety-one million, fifteen thousand, one hundred twelve".