5071987 has 4 divisors (see below), whose sum is σ = 5195736. Its totient is φ = 4948240.

The previous prime is 5071973. The next prime is 5072057. The reversal of 5071987 is 7891705.

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 5071987 - 2¹⁵ = 5039219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5071687) 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, 61813 + ... + 61894.

It is an arithmetic number, because the mean of its divisors is an integer number (1298934).

Almost surely, 2^5071987 is an apocalyptic number.

5071987 is a deficient number, since it is larger than the sum of its proper divisors (123749).

5071987 is a wasteful number, since it uses less digits than its factorization.

5071987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123748.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 5071987 is about 2252.1072354575. The cubic root of 5071987 is about 171.8143277642.

The spelling of 5071987 in words is "five million, seventy-one thousand, nine hundred eighty-seven".