45009561 has 8 divisors (see below), whose sum is σ = 61145280. Its totient is φ = 29440112.

The previous prime is 45009553. The next prime is 45009563. The reversal of 45009561 is 16590054.

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

It is a cyclic number.

It is not a de Polignac number, because 45009561 - 2³ = 45009553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45009563) 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, 141381 + ... + 141698.

It is an arithmetic number, because the mean of its divisors is an integer number (7643160).

Almost surely, 2^45009561 is an apocalyptic number.

It is an amenable number.

45009561 is a deficient number, since it is larger than the sum of its proper divisors (16135719).

45009561 is a wasteful number, since it uses less digits than its factorization.

45009561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283135.

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

The square root of 45009561 is about 6708.9165295150. The cubic root of 45009561 is about 355.7145193740.

The spelling of 45009561 in words is "forty-five million, nine thousand, five hundred sixty-one".