45208581 has 16 divisors (see below), whose sum is σ = 69219840. Its totient is φ = 25956720.

The previous prime is 45208549. The next prime is 45208589. The reversal of 45208581 is 18580254.

It is not a de Polignac number, because 45208581 - 2⁵ = 45208549 is a prime.

It is a super-2 number, since 2×45208581² = 4087631592067122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45208589) 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 15 ways as a sum of consecutive naturals, for example, 35425 + ... + 36678.

It is an arithmetic number, because the mean of its divisors is an integer number (4326240).

Almost surely, 2^45208581 is an apocalyptic number.

It is an amenable number.

45208581 is a deficient number, since it is larger than the sum of its proper divisors (24011259).

45208581 is a wasteful number, since it uses less digits than its factorization.

45208581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72136.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 45208581 is about 6723.7326686893. The cubic root of 45208581 is about 356.2380393645.

The spelling of 45208581 in words is "forty-five million, two hundred eight thousand, five hundred eighty-one".