252440027 has 4 divisors (see below), whose sum is σ = 288502896. Its totient is φ = 216377160.

The previous prime is 252440017. The next prime is 252440047. The reversal of 252440027 is 720044252.

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 252440027 - 2¹⁰ = 252439003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252439978 and 252440005.

It is not an unprimeable number, because it can be changed into a prime (252440017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18031424 + ... + 18031437.

It is an arithmetic number, because the mean of its divisors is an integer number (72125724).

Almost surely, 2^252440027 is an apocalyptic number.

252440027 is a deficient number, since it is larger than the sum of its proper divisors (36062869).

252440027 is an equidigital number, since it uses as much as digits as its factorization.

252440027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36062868.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 252440027 is about 15888.3613692539. The cubic root of 252440027 is about 632.0033873597.

Adding to 252440027 its reverse (720044252), we get a palindrome (972484279).

The spelling of 252440027 in words is "two hundred fifty-two million, four hundred forty thousand, twenty-seven".