5531909 has 4 divisors (see below), whose sum is σ = 5540940. Its totient is φ = 5522880.

The previous prime is 5531893. The next prime is 5531927. The reversal of 5531909 is 9091355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4202500 + 1329409 = 2050^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 5531909 - 2⁴ = 5531893 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 (5531209) 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, 3524 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (1385235).

Almost surely, 2^5531909 is an apocalyptic number.

It is an amenable number.

5531909 is a deficient number, since it is larger than the sum of its proper divisors (9031).

5531909 is an equidigital number, since it uses as much as digits as its factorization.

5531909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9030.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 5531909 is about 2352.0010629249. The cubic root of 5531909 is about 176.8581220186.

The spelling of 5531909 in words is "five million, five hundred thirty-one thousand, nine hundred nine".