5909561 has 16 divisors (see below), whose sum is σ = 7062528. Its totient is φ = 4838400.

The previous prime is 5909549. The next prime is 5909567. The reversal of 5909561 is 1659095.

It is a de Polignac number, because none of the positive numbers 2^k-5909561 is a prime.

It is a super-2 number, since 2×5909561² = 69845822425442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5909567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24401 + ... + 24641.

It is an arithmetic number, because the mean of its divisors is an integer number (441408).

Almost surely, 2^5909561 is an apocalyptic number.

It is an amenable number.

5909561 is a deficient number, since it is larger than the sum of its proper divisors (1152967).

5909561 is a wasteful number, since it uses less digits than its factorization.

5909561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 5909561 is about 2430.9588643167. The cubic root of 5909561 is about 180.7944412008.

The spelling of 5909561 in words is "five million, nine hundred nine thousand, five hundred sixty-one".