52636987 has 8 divisors (see below), whose sum is σ = 56938896. Its totient is φ = 48371232.

The previous prime is 52636967. The next prime is 52636993. The reversal of 52636987 is 78963625.

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

It is not a de Polignac number, because 52636987 - 2¹⁵ = 52604219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52636957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5968 + ... + 11869.

It is an arithmetic number, because the mean of its divisors is an integer number (7117362).

Almost surely, 2^52636987 is an apocalyptic number.

52636987 is a deficient number, since it is larger than the sum of its proper divisors (4301909).

52636987 is a wasteful number, since it uses less digits than its factorization.

52636987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18077.

The product of its digits is 544320, while the sum is 46.

The square root of 52636987 is about 7255.1352158316. The cubic root of 52636987 is about 374.7690121185.

The spelling of 52636987 in words is "fifty-two million, six hundred thirty-six thousand, nine hundred eighty-seven".