5021986 has 8 divisors (see below), whose sum is σ = 7546140. Its totient is φ = 2506608.

The previous prime is 5021983. The next prime is 5021999. The reversal of 5021986 is 6891205.

It can be written as a sum of positive squares in 2 ways, for example, as 4756761 + 265225 = 2181^2 + 515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5021983) 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, 501 + ... + 3208.

Almost surely, 2^5021986 is an apocalyptic number.

5021986 is a deficient number, since it is larger than the sum of its proper divisors (2524154).

5021986 is a wasteful number, since it uses less digits than its factorization.

5021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 5021986 is about 2240.9788040051. The cubic root of 5021986 is about 171.2478650701.

It can be divided in two parts, 50219 and 86, that added together give a palindrome (50305).

The spelling of 5021986 in words is "five million, twenty-one thousand, nine hundred eighty-six".