5491787 has 4 divisors (see below), whose sum is σ = 6276336. Its totient is φ = 4707240.

The previous prime is 5491781. The next prime is 5491793. The reversal of 5491787 is 7871945.

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

It is an interprime number because it is at equal distance from previous prime (5491781) and next prime (5491793).

It is a cyclic number.

It is not a de Polignac number, because 5491787 - 2⁴ = 5491771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5491781) 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, 392264 + ... + 392277.

It is an arithmetic number, because the mean of its divisors is an integer number (1569084).

Almost surely, 2^5491787 is an apocalyptic number.

5491787 is a deficient number, since it is larger than the sum of its proper divisors (784549).

5491787 is an equidigital number, since it uses as much as digits as its factorization.

5491787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784548.

The product of its digits is 70560, while the sum is 41.

The square root of 5491787 is about 2343.4562082531. The cubic root of 5491787 is about 176.4295101141.

The spelling of 5491787 in words is "five million, four hundred ninety-one thousand, seven hundred eighty-seven".