45011820 has 48 divisors (see below), whose sum is σ = 144039168. Its totient is φ = 10288320.

The previous prime is 45011819. The next prime is 45011821. The reversal of 45011820 is 2811054.

It is an interprime number because it is at equal distance from previous prime (45011819) and next prime (45011821).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (45011821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53166 + ... + 54005.

It is an arithmetic number, because the mean of its divisors is an integer number (3000816).

Almost surely, 2^45011820 is an apocalyptic number.

It is an amenable number.

45011820 is an abundant number, since it is smaller than the sum of its proper divisors (99027348).

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

45011820 is a wasteful number, since it uses less digits than its factorization.

45011820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107190 (or 107188 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 45011820 is about 6709.0848854371. The cubic root of 45011820 is about 355.7204702996.

Adding to 45011820 its reverse (2811054), we get a palindrome (47822874).

The spelling of 45011820 in words is "forty-five million, eleven thousand, eight hundred twenty".