52221678 has 8 divisors (see below), whose sum is σ = 104443368. Its totient is φ = 17407224.

The previous prime is 52221677. The next prime is 52221679. The reversal of 52221678 is 87612225.

It is an interprime number because it is at equal distance from previous prime (52221677) and next prime (52221679).

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

52221678 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52221677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4351801 + ... + 4351812.

It is an arithmetic number, because the mean of its divisors is an integer number (13055421).

Almost surely, 2^52221678 is an apocalyptic number.

52221678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52221678 is a wasteful number, since it uses less digits than its factorization.

52221678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703618.

The product of its digits is 13440, while the sum is 33.

The square root of 52221678 is about 7226.4568081460. The cubic root of 52221678 is about 373.7807583848.

The spelling of 52221678 in words is "fifty-two million, two hundred twenty-one thousand, six hundred seventy-eight".