5031987 has 4 divisors (see below), whose sum is σ = 6709320. Its totient is φ = 3354656.

The previous prime is 5031967. The next prime is 5031991. The reversal of 5031987 is 7891305.

5031987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5031987 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (5031907) 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, 838662 + ... + 838667.

It is an arithmetic number, because the mean of its divisors is an integer number (1677330).

Almost surely, 2^5031987 is an apocalyptic number.

5031987 is a deficient number, since it is larger than the sum of its proper divisors (1677333).

5031987 is a wasteful number, since it uses less digits than its factorization.

5031987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677332.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 5031987 is about 2243.2090852170. The cubic root of 5031987 is about 171.3614664934.

The spelling of 5031987 in words is "five million, thirty-one thousand, nine hundred eighty-seven".