45544821 has 8 divisors (see below), whose sum is σ = 69401664. Its totient is φ = 26025600.

The previous prime is 45544813. The next prime is 45544841. The reversal of 45544821 is 12844554.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45544821 - 2³ = 45544813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45544801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084380 + ... + 1084421.

It is an arithmetic number, because the mean of its divisors is an integer number (8675208).

Almost surely, 2^45544821 is an apocalyptic number.

It is an amenable number.

45544821 is a deficient number, since it is larger than the sum of its proper divisors (23856843).

45544821 is a wasteful number, since it uses less digits than its factorization.

45544821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168811.

The product of its digits is 25600, while the sum is 33.

The square root of 45544821 is about 6748.6903173875. The cubic root of 45544821 is about 357.1190353863.

The spelling of 45544821 in words is "forty-five million, five hundred forty-four thousand, eight hundred twenty-one".