45390515 has 8 divisors (see below), whose sum is σ = 54505008. Its totient is φ = 36288160.

The previous prime is 45390509. The next prime is 45390517. The reversal of 45390515 is 51509354.

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

It is a de Polignac number, because none of the positive numbers 2^k-45390515 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45390517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11780 + ... + 15150.

It is an arithmetic number, because the mean of its divisors is an integer number (6813126).

Almost surely, 2^45390515 is an apocalyptic number.

45390515 is a deficient number, since it is larger than the sum of its proper divisors (9114493).

45390515 is a wasteful number, since it uses less digits than its factorization.

45390515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 45390515 is about 6737.2483255406. The cubic root of 45390515 is about 356.7152722454.

Adding to 45390515 its reverse (51509354), we get a palindrome (96899869).

The spelling of 45390515 in words is "forty-five million, three hundred ninety thousand, five hundred fifteen".