45528821 has 16 divisors (see below), whose sum is σ = 50295168. Its totient is φ = 40958400.

The previous prime is 45528817. The next prime is 45528827. The reversal of 45528821 is 12882554.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45528821 - 2² = 45528817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45528827) 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 15 ways as a sum of consecutive naturals, for example, 98531 + ... + 98991.

It is an arithmetic number, because the mean of its divisors is an integer number (3143448).

Almost surely, 2^45528821 is an apocalyptic number.

It is an amenable number.

45528821 is a deficient number, since it is larger than the sum of its proper divisors (4766347).

45528821 is a wasteful number, since it uses less digits than its factorization.

45528821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 25600, while the sum is 35.

The square root of 45528821 is about 6747.5047980717. The cubic root of 45528821 is about 357.0772115765.

The spelling of 45528821 in words is "forty-five million, five hundred twenty-eight thousand, eight hundred twenty-one".