9045821 has 4 divisors (see below), whose sum is σ = 9199200. Its totient is φ = 8892444.

The previous prime is 9045811. The next prime is 9045823. The reversal of 9045821 is 1285409.

9045821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9045821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9045823) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 76601 + ... + 76718.

It is an arithmetic number, because the mean of its divisors is an integer number (2299800).

Almost surely, 2^9045821 is an apocalyptic number.

It is an amenable number.

9045821 is a deficient number, since it is larger than the sum of its proper divisors (153379).

9045821 is a wasteful number, since it uses less digits than its factorization.

9045821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153378.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 9045821 is about 3007.6271377948. The cubic root of 9045821 is about 208.3607905500.

The spelling of 9045821 in words is "nine million, forty-five thousand, eight hundred twenty-one".