45051820 has 24 divisors (see below), whose sum is σ = 103210128. Its totient is φ = 16382400.

The previous prime is 45051791. The next prime is 45051827. The reversal of 45051820 is 2815054.

45051820 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

45051820 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (45051827) 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, 102171 + ... + 102610.

It is an arithmetic number, because the mean of its divisors is an integer number (4300422).

Almost surely, 2^45051820 is an apocalyptic number.

It is an amenable number.

45051820 is an abundant number, since it is smaller than the sum of its proper divisors (58158308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45051820 is a wasteful number, since it uses less digits than its factorization.

45051820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204801 (or 204799 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 45051820 is about 6712.0652559402. The cubic root of 45051820 is about 355.8258100826.

Adding to 45051820 its reverse (2815054), we get a palindrome (47866874).

The spelling of 45051820 in words is "forty-five million, fifty-one thousand, eight hundred twenty".