45551815 has 8 divisors (see below), whose sum is σ = 55062000. Its totient is φ = 36174912.

The previous prime is 45551813. The next prime is 45551839. The reversal of 45551815 is 51815554.

45551815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 45551815 - 2¹ = 45551813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45551813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32565 + ... + 33934.

It is an arithmetic number, because the mean of its divisors is an integer number (6882750).

Almost surely, 2^45551815 is an apocalyptic number.

45551815 is a deficient number, since it is larger than the sum of its proper divisors (9510185).

45551815 is a wasteful number, since it uses less digits than its factorization.

45551815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66641.

The product of its digits is 20000, while the sum is 34.

The square root of 45551815 is about 6749.2084721099. The cubic root of 45551815 is about 357.1373145426.

The spelling of 45551815 in words is "forty-five million, five hundred fifty-one thousand, eight hundred fifteen".