45163309 has 4 divisors (see below), whose sum is σ = 45585504. Its totient is φ = 44741116.

The previous prime is 45163291. The next prime is 45163319. The reversal of 45163309 is 90336154.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90336154 = 2 ⋅45168077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45163309 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45163319) 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, 210937 + ... + 211150.

It is an arithmetic number, because the mean of its divisors is an integer number (11396376).

Almost surely, 2^45163309 is an apocalyptic number.

It is an amenable number.

45163309 is a deficient number, since it is larger than the sum of its proper divisors (422195).

45163309 is a wasteful number, since it uses less digits than its factorization.

45163309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422194.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 45163309 is about 6720.3652430504. The cubic root of 45163309 is about 356.1190870582.

The spelling of 45163309 in words is "forty-five million, one hundred sixty-three thousand, three hundred nine".