52839987 has 16 divisors (see below), whose sum is σ = 71911680. Its totient is φ = 34502112.

The previous prime is 52839953. The next prime is 52839989. The reversal of 52839987 is 78993825.

It is not a de Polignac number, because 52839987 - 2¹⁹ = 52315699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52839989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85893 + ... + 86505.

It is an arithmetic number, because the mean of its divisors is an integer number (4494480).

Almost surely, 2^52839987 is an apocalyptic number.

52839987 is a deficient number, since it is larger than the sum of its proper divisors (19071693).

52839987 is a wasteful number, since it uses less digits than its factorization.

52839987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162.

The product of its digits is 1088640, while the sum is 51.

The square root of 52839987 is about 7269.1118439600. Note that the first 3 decimals coincide. The cubic root of 52839987 is about 375.2501726215.

The spelling of 52839987 in words is "fifty-two million, eight hundred thirty-nine thousand, nine hundred eighty-seven".