91149145 has 24 divisors (see below), whose sum is σ = 115492608. Its totient is φ = 68983200.

The previous prime is 91149089. The next prime is 91149169. The reversal of 91149145 is 54194119.

It is not a de Polignac number, because 91149145 - 2¹⁹ = 90624857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91149145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 695730 + ... + 695860.

It is an arithmetic number, because the mean of its divisors is an integer number (4812192).

Almost surely, 2^91149145 is an apocalyptic number.

It is an amenable number.

91149145 is a deficient number, since it is larger than the sum of its proper divisors (24343463).

91149145 is a wasteful number, since it uses less digits than its factorization.

91149145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 234 counting only the distinct ones).

The product of its digits is 6480, while the sum is 34.

The square root of 91149145 is about 9547.2061358284. The cubic root of 91149145 is about 450.0397413461.

The spelling of 91149145 in words is "ninety-one million, one hundred forty-nine thousand, one hundred forty-five".