45545815 has 32 divisors (see below), whose sum is σ = 65235456. Its totient is φ = 29877120.

The previous prime is 45545807. The next prime is 45545821. The reversal of 45545815 is 51854554.

It is not a de Polignac number, because 45545815 - 2³ = 45545807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 79480 + ... + 80050.

It is an arithmetic number, because the mean of its divisors is an integer number (2038608).

Almost surely, 2^45545815 is an apocalyptic number.

45545815 is a deficient number, since it is larger than the sum of its proper divisors (19689641).

45545815 is a wasteful number, since it uses less digits than its factorization.

45545815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its digits is 80000, while the sum is 37.

The square root of 45545815 is about 6748.7639609042. The cubic root of 45545815 is about 357.1216333673.

It can be divided in two parts, 45545 and 815, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 45545815 in words is "forty-five million, five hundred forty-five thousand, eight hundred fifteen".