5129987 has 2 divisors, whose sum is σ = 5129988. Its totient is φ = 5129986.

The previous prime is 5129983. The next prime is 5130001. The reversal of 5129987 is 7899215.

5129987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5129987 - 2² = 5129983 is a prime.

It is not a weakly prime, because it can be changed into another prime (5129983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2564993 + 2564994.

It is an arithmetic number, because the mean of its divisors is an integer number (2564994).

Almost surely, 2^5129987 is an apocalyptic number.

5129987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5129987 is an equidigital number, since it uses as much as digits as its factorization.

5129987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 41.

The square root of 5129987 is about 2264.9474607593. The cubic root of 5129987 is about 172.4667666847.

It can be divided in two parts, 5129 and 987, that added together give a palindrome (6116).

The spelling of 5129987 in words is "five million, one hundred twenty-nine thousand, nine hundred eighty-seven".