252522143 has 4 divisors (see below), whose sum is σ = 252685680. Its totient is φ = 252358608.

The previous prime is 252522139. The next prime is 252522163. The reversal of 252522143 is 341225252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252522143 - 2² = 252522139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252522163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79430 + ... + 82547.

It is an arithmetic number, because the mean of its divisors is an integer number (63171420).

Almost surely, 2^252522143 is an apocalyptic number.

252522143 is a deficient number, since it is larger than the sum of its proper divisors (163537).

252522143 is a wasteful number, since it uses less digits than its factorization.

252522143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163536.

The product of its digits is 4800, while the sum is 26.

The square root of 252522143 is about 15890.9453148641. The cubic root of 252522143 is about 632.0719078773.

Adding to 252522143 its reverse (341225252), we get a palindrome (593747395).

The spelling of 252522143 in words is "two hundred fifty-two million, five hundred twenty-two thousand, one hundred forty-three".