45513309 has 4 divisors (see below), whose sum is σ = 60684416. Its totient is φ = 30342204.

The previous prime is 45513287. The next prime is 45513311. The reversal of 45513309 is 90331554.

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 not a de Polignac number, because 45513309 - 2¹² = 45509213 is a prime.

It is a super-2 number, since 2×45513309² = 4142922592258962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45513319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7585549 + ... + 7585554.

It is an arithmetic number, because the mean of its divisors is an integer number (15171104).

Almost surely, 2^45513309 is an apocalyptic number.

It is an amenable number.

45513309 is a deficient number, since it is larger than the sum of its proper divisors (15171107).

45513309 is a wasteful number, since it uses less digits than its factorization.

45513309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15171106.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 45513309 is about 6746.3552382008. The cubic root of 45513309 is about 357.0366540369.

The spelling of 45513309 in words is "forty-five million, five hundred thirteen thousand, three hundred nine".