5509945 has 8 divisors (see below), whose sum is σ = 7556544. Its totient is φ = 3778224.

The previous prime is 5509939. The next prime is 5509979. The reversal of 5509945 is 5499055.

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 5509945 - 2⁹ = 5509433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78679 + ... + 78748.

It is an arithmetic number, because the mean of its divisors is an integer number (944568).

Almost surely, 2^5509945 is an apocalyptic number.

It is an amenable number.

5509945 is a deficient number, since it is larger than the sum of its proper divisors (2046599).

5509945 is a wasteful number, since it uses less digits than its factorization.

5509945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157439.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 5509945 is about 2347.3272034380. The cubic root of 5509945 is about 176.6237445666.

The spelling of 5509945 in words is "five million, five hundred nine thousand, nine hundred forty-five".