45821578 has 16 divisors (see below), whose sum is σ = 78927840. Its totient is φ = 19731600.

The previous prime is 45821563. The next prime is 45821591. The reversal of 45821578 is 87512854.

It is a self number, because there is not a number n which added to its sum of digits gives 45821578.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54393 + ... + 55228.

It is an arithmetic number, because the mean of its divisors is an integer number (4932990).

Almost surely, 2^45821578 is an apocalyptic number.

45821578 is a deficient number, since it is larger than the sum of its proper divisors (33106262).

45821578 is a wasteful number, since it uses less digits than its factorization.

45821578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109653.

The product of its digits is 89600, while the sum is 40.

The square root of 45821578 is about 6769.1637592837. The cubic root of 45821578 is about 357.8409299239.

The spelling of 45821578 in words is "forty-five million, eight hundred twenty-one thousand, five hundred seventy-eight".