45285921 has 6 divisors (see below), whose sum is σ = 65413010. Its totient is φ = 30190608.

The previous prime is 45285917. The next prime is 45285953. The reversal of 45285921 is 12958254.

45285921 is a `hidden beast` number, since 45 + 28 + 592 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43758225 + 1527696 = 6615^2 + 1236^2 .

It is not a de Polignac number, because 45285921 - 2² = 45285917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45285971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2515876 + ... + 2515893.

Almost surely, 2^45285921 is an apocalyptic number.

It is an amenable number.

45285921 is a deficient number, since it is larger than the sum of its proper divisors (20127089).

45285921 is a wasteful number, since it uses less digits than its factorization.

45285921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031775 (or 5031772 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 45285921 is about 6729.4814807680. The cubic root of 45285921 is about 356.4410668516.

The spelling of 45285921 in words is "forty-five million, two hundred eighty-five thousand, nine hundred twenty-one".