52135986 has 64 divisors (see below), whose sum is σ = 128434176. Its totient is φ = 13780800.

The previous prime is 52135927. The next prime is 52136011. The reversal of 52135986 is 68953125.

It is a super-2 number, since 2×52135986² = 5436322072384392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29076 + ... + 30816.

It is an arithmetic number, because the mean of its divisors is an integer number (2006784).

Almost surely, 2^52135986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52135986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64217088).

52135986 is an abundant number, since it is smaller than the sum of its proper divisors (76298190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52135986 is a wasteful number, since it uses less digits than its factorization.

52135986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its digits is 64800, while the sum is 39.

The square root of 52135986 is about 7220.5253271490. The cubic root of 52135986 is about 373.5761973825.

The spelling of 52135986 in words is "fifty-two million, one hundred thirty-five thousand, nine hundred eighty-six".