45561909 has 8 divisors (see below), whose sum is σ = 62708992. Its totient is φ = 29394720.

The previous prime is 45561899. The next prime is 45561913. The reversal of 45561909 is 90916554.

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

It is not a de Polignac number, because 45561909 - 2⁵ = 45561877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45561959) 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, 244864 + ... + 245049.

It is an arithmetic number, because the mean of its divisors is an integer number (7838624).

Almost surely, 2^45561909 is an apocalyptic number.

It is an amenable number.

45561909 is a deficient number, since it is larger than the sum of its proper divisors (17147083).

45561909 is a wasteful number, since it uses less digits than its factorization.

45561909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489947.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 45561909 is about 6749.9562220803. The cubic root of 45561909 is about 357.1636923997.

The spelling of 45561909 in words is "forty-five million, five hundred sixty-one thousand, nine hundred nine".