45016509 has 4 divisors (see below), whose sum is σ = 60022016. Its totient is φ = 30011004.

The previous prime is 45016507. The next prime is 45016511. The reversal of 45016509 is 90561054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (45016507) and next prime (45016511).

It is not a de Polignac number, because 45016509 - 2¹ = 45016507 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45016501) 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 3 ways as a sum of consecutive naturals, for example, 7502749 + ... + 7502754.

It is an arithmetic number, because the mean of its divisors is an integer number (15005504).

Almost surely, 2^45016509 is an apocalyptic number.

It is an amenable number.

45016509 is a deficient number, since it is larger than the sum of its proper divisors (15005507).

45016509 is a wasteful number, since it uses less digits than its factorization.

45016509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15005506.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 45016509 is about 6709.4343278700. The cubic root of 45016509 is about 355.7328219839.

The spelling of 45016509 in words is "forty-five million, sixteen thousand, five hundred nine".