45170009 has 4 divisors (see below), whose sum is σ = 45336960. Its totient is φ = 45003060.

The previous prime is 45169981. The next prime is 45170029. The reversal of 45170009 is 90007154.

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: 90007154 = 2 ⋅45003577.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45170009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45170009.

It is not an unprimeable number, because it can be changed into a prime (45170029) 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, 83069 + ... + 83610.

It is an arithmetic number, because the mean of its divisors is an integer number (11334240).

Almost surely, 2^45170009 is an apocalyptic number.

It is an amenable number.

45170009 is a deficient number, since it is larger than the sum of its proper divisors (166951).

45170009 is a wasteful number, since it uses less digits than its factorization.

45170009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166950.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 45170009 is about 6720.8637093755. The cubic root of 45170009 is about 356.1366963370.

The spelling of 45170009 in words is "forty-five million, one hundred seventy thousand, nine".