9121545 has 16 divisors (see below), whose sum is σ = 16216320. Its totient is φ = 4864752.

The previous prime is 9121529. The next prime is 9121559. The reversal of 9121545 is 5451219.

It is not a de Polignac number, because 9121545 - 2⁴ = 9121529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33649 + ... + 33918.

It is an arithmetic number, because the mean of its divisors is an integer number (1013520).

Almost surely, 2^9121545 is an apocalyptic number.

It is an amenable number.

9121545 is a deficient number, since it is larger than the sum of its proper divisors (7094775).

9121545 is a wasteful number, since it uses less digits than its factorization.

9121545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67581 (or 67575 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 9121545 is about 3020.1895635870. The cubic root of 9121545 is about 208.9405827602.

The spelling of 9121545 in words is "nine million, one hundred twenty-one thousand, five hundred forty-five".