52182281 has 8 divisors (see below), whose sum is σ = 54075720. Its totient is φ = 50295168.

The previous prime is 52182271. The next prime is 52182283. The reversal of 52182281 is 18228125.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8357881 + 43824400 = 2891^2 + 6620^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52182281 is a prime.

It is a super-2 number, since 2×52182281² = 5445980900725922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52182283) 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, 20765 + ... + 23141.

It is an arithmetic number, because the mean of its divisors is an integer number (6759465).

Almost surely, 2^52182281 is an apocalyptic number.

It is an amenable number.

52182281 is a deficient number, since it is larger than the sum of its proper divisors (1893439).

52182281 is a wasteful number, since it uses less digits than its factorization.

52182281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163.

The product of its digits is 2560, while the sum is 29.

The square root of 52182281 is about 7223.7304074834. The cubic root of 52182281 is about 373.6867390311.

The spelling of 52182281 in words is "fifty-two million, one hundred eighty-two thousand, two hundred eighty-one".