45517815 has 64 divisors (see below), whose sum is σ = 94464000. Its totient is φ = 20786976.

The previous prime is 45517793. The next prime is 45517817. The reversal of 45517815 is 51871554.

It is not a de Polignac number, because 45517815 - 2⁶ = 45517751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45517815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45517817) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 45814 + ... + 46796.

It is an arithmetic number, because the mean of its divisors is an integer number (1476000).

Almost surely, 2^45517815 is an apocalyptic number.

45517815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45517815 is an abundant number, since it is smaller than the sum of its proper divisors (48946185).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45517815 is an equidigital number, since it uses as much as digits as its factorization.

45517815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 998 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 45517815 is about 6746.6891880388. The cubic root of 45517815 is about 357.0484363346.

The spelling of 45517815 in words is "forty-five million, five hundred seventeen thousand, eight hundred fifteen".