45033821 has 4 divisors (see below), whose sum is σ = 51467232. Its totient is φ = 38600412.

The previous prime is 45033811. The next prime is 45033823. The reversal of 45033821 is 12833054.

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 not a de Polignac number, because 45033821 - 2¹⁰ = 45032797 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 (45033823) 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, 3216695 + ... + 3216708.

It is an arithmetic number, because the mean of its divisors is an integer number (12866808).

Almost surely, 2^45033821 is an apocalyptic number.

It is an amenable number.

45033821 is a deficient number, since it is larger than the sum of its proper divisors (6433411).

45033821 is an equidigital number, since it uses as much as digits as its factorization.

45033821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433410.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 45033821 is about 6710.7243275223. The cubic root of 45033821 is about 355.7784175330.

Adding to 45033821 its reverse (12833054), we get a palindrome (57866875).

It can be divided in two parts, 45033 and 821, that added together give a palindrome (45854).

The spelling of 45033821 in words is "forty-five million, thirty-three thousand, eight hundred twenty-one".