5531287 has 4 divisors (see below), whose sum is σ = 5553576. Its totient is φ = 5509000.

The previous prime is 5531263. The next prime is 5531291. The reversal of 5531287 is 7821355.

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

It is a cyclic number.

It is not a de Polignac number, because 5531287 - 2⁷ = 5531159 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 (5531087) 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, 10768 + ... + 11269.

It is an arithmetic number, because the mean of its divisors is an integer number (1388394).

Almost surely, 2^5531287 is an apocalyptic number.

5531287 is a deficient number, since it is larger than the sum of its proper divisors (22289).

5531287 is a wasteful number, since it uses less digits than its factorization.

5531287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22288.

The product of its digits is 8400, while the sum is 31.

The square root of 5531287 is about 2351.8688313764. The cubic root of 5531287 is about 176.8514932114.

The spelling of 5531287 in words is "five million, five hundred thirty-one thousand, two hundred eighty-seven".