52420986 has 32 divisors (see below), whose sum is σ = 116731200. Its totient is φ = 17437680.

The previous prime is 52420967. The next prime is 52420987. The reversal of 52420986 is 68902425.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52420986.

It is not an unprimeable number, because it can be changed into a prime (52420987) 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, 44181 + ... + 45351.

It is an arithmetic number, because the mean of its divisors is an integer number (3647850).

Almost surely, 2^52420986 is an apocalyptic number.

52420986 is an abundant number, since it is smaller than the sum of its proper divisors (64310214).

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

52420986 is a wasteful number, since it uses less digits than its factorization.

52420986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011 (or 2005 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 52420986 is about 7240.2338360028. The cubic root of 52420986 is about 374.2556755939.

The spelling of 52420986 in words is "fifty-two million, four hundred twenty thousand, nine hundred eighty-six".