45481815 has 24 divisors (see below), whose sum is σ = 79623648. Its totient is φ = 24014400.

The previous prime is 45481789. The next prime is 45481823. The reversal of 45481815 is 51818454.

It is not a de Polignac number, because 45481815 - 2⁸ = 45481559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45481815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (3317652).

Almost surely, 2^45481815 is an apocalyptic number.

45481815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45481815 is a deficient number, since it is larger than the sum of its proper divisors (34141833).

45481815 is a wasteful number, since it uses less digits than its factorization.

45481815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119 (or 10116 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 45481815 is about 6744.0206850217. The cubic root of 45481815 is about 356.9542817429.

The spelling of 45481815 in words is "forty-five million, four hundred eighty-one thousand, eight hundred fifteen".