45121885 has 8 divisors (see below), whose sum is σ = 54183096. Its totient is φ = 36072960.

The previous prime is 45121873. The next prime is 45121889. The reversal of 45121885 is 58812154.

It can be written as a sum of positive squares in 4 ways, for example, as 1058841 + 44063044 = 1029^2 + 6638^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-45121885 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45121885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45121889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10357 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (6772887).

Almost surely, 2^45121885 is an apocalyptic number.

It is an amenable number.

45121885 is a deficient number, since it is larger than the sum of its proper divisors (9061211).

45121885 is a wasteful number, since it uses less digits than its factorization.

45121885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143.

The product of its digits is 12800, while the sum is 34.

The square root of 45121885 is about 6717.2825606788. The cubic root of 45121885 is about 356.0101757181.

The spelling of 45121885 in words is "forty-five million, one hundred twenty-one thousand, eight hundred eighty-five".