5631487 has 4 divisors (see below), whose sum is σ = 5666200. Its totient is φ = 5596776.

The previous prime is 5631443. The next prime is 5631499. The reversal of 5631487 is 7841365.

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 5631487 - 2¹⁹ = 5107199 is a prime.

It is a Duffinian number.

5631487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631427) 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, 17112 + ... + 17437.

It is an arithmetic number, because the mean of its divisors is an integer number (1416550).

Almost surely, 2^5631487 is an apocalyptic number.

5631487 is a deficient number, since it is larger than the sum of its proper divisors (34713).

5631487 is a wasteful number, since it uses less digits than its factorization.

5631487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34712.

The product of its digits is 20160, while the sum is 34.

The square root of 5631487 is about 2373.0754307438. The cubic root of 5631487 is about 177.9130050844.

The spelling of 5631487 in words is "five million, six hundred thirty-one thousand, four hundred eighty-seven".