91454545 has 48 divisors (see below), whose sum is σ = 140474880. Its totient is φ = 55657728.

The previous prime is 91454537. The next prime is 91454549. The reversal of 91454545 is 54545419.

It is not a de Polignac number, because 91454545 - 2³ = 91454537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91454549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382536 + ... + 382774.

It is an arithmetic number, because the mean of its divisors is an integer number (2926560).

Almost surely, 2^91454545 is an apocalyptic number.

It is an amenable number.

91454545 is a deficient number, since it is larger than the sum of its proper divisors (49020335).

91454545 is a wasteful number, since it uses less digits than its factorization.

91454545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 293 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 91454545 is about 9563.1869687882. The cubic root of 91454545 is about 450.5418082964.

The spelling of 91454545 in words is "ninety-one million, four hundred fifty-four thousand, five hundred forty-five".