52863987 has 16 divisors (see below), whose sum is σ = 77242752. Its totient is φ = 31893120.

The previous prime is 52863983. The next prime is 52863989. The reversal of 52863987 is 78936825.

It is not a de Polignac number, because 52863987 - 2² = 52863983 is a prime.

It is a super-2 number, since 2×52863987² = 5589202243072338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52863983) 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, 3963 + ... + 11019.

It is an arithmetic number, because the mean of its divisors is an integer number (4827672).

Almost surely, 2^52863987 is an apocalyptic number.

52863987 is a deficient number, since it is larger than the sum of its proper divisors (24378765).

52863987 is a wasteful number, since it uses less digits than its factorization.

52863987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7298.

The product of its digits is 725760, while the sum is 48.

The square root of 52863987 is about 7270.7624772097. The cubic root of 52863987 is about 375.3069770827.

The spelling of 52863987 in words is "fifty-two million, eight hundred sixty-three thousand, nine hundred eighty-seven".