5537809 has 4 divisors (see below), whose sum is σ = 5716480. Its totient is φ = 5359140.

The previous prime is 5537789. The next prime is 5537837. The reversal of 5537809 is 9087355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9087355 = 5 ⋅1817471.

It is a cyclic number.

It is not a de Polignac number, because 5537809 - 2⁹ = 5537297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5537839) 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, 89289 + ... + 89350.

It is an arithmetic number, because the mean of its divisors is an integer number (1429120).

Almost surely, 2^5537809 is an apocalyptic number.

It is an amenable number.

5537809 is a deficient number, since it is larger than the sum of its proper divisors (178671).

5537809 is a wasteful number, since it uses less digits than its factorization.

5537809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178670.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 5537809 is about 2353.2549798099. The cubic root of 5537809 is about 176.9209750756.

The spelling of 5537809 in words is "five million, five hundred thirty-seven thousand, eight hundred nine".