52618986 has 96 divisors (see below), whose sum is σ = 138498048. Its totient is φ = 14113440.

The previous prime is 52618981. The next prime is 52619033. The reversal of 52618986 is 68981625.

It is not an unprimeable number, because it can be changed into a prime (52618981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194031 + ... + 194301.

It is an arithmetic number, because the mean of its divisors is an integer number (1442688).

Almost surely, 2^52618986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52618986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69249024).

52618986 is an abundant number, since it is smaller than the sum of its proper divisors (85879062).

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

52618986 is a wasteful number, since it uses less digits than its factorization.

52618986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 373 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 52618986 is about 7253.8945401763. The cubic root of 52618986 is about 374.7262855964.

The spelling of 52618986 in words is "fifty-two million, six hundred eighteen thousand, nine hundred eighty-six".