91045576 has 16 divisors (see below), whose sum is σ = 172629900. Its totient is φ = 45010944.

The previous prime is 91045571. The next prime is 91045579. The reversal of 91045576 is 67554019.

It can be written as a sum of positive squares in 2 ways, for example, as 90820900 + 224676 = 9530^2 + 474^2 .

It is not an unprimeable number, because it can be changed into a prime (91045571) 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, 63225 + ... + 64648.

Almost surely, 2^91045576 is an apocalyptic number.

It is an amenable number.

91045576 is a deficient number, since it is larger than the sum of its proper divisors (81584324).

91045576 is a wasteful number, since it uses less digits than its factorization.

91045576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127968 (or 127964 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 91045576 is about 9541.7805466276. The cubic root of 91045576 is about 449.8692229031.

The spelling of 91045576 in words is "ninety-one million, forty-five thousand, five hundred seventy-six".