252404017 has 4 divisors (see below), whose sum is σ = 253725696. Its totient is φ = 251082340.

The previous prime is 252403979. The next prime is 252404051. The reversal of 252404017 is 710404252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252404017 - 2⁷ = 252403889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252403982 and 252404000.

It is not an unprimeable number, because it can be changed into a prime (252494017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660553 + ... + 660934.

It is an arithmetic number, because the mean of its divisors is an integer number (63431424).

Almost surely, 2^252404017 is an apocalyptic number.

It is an amenable number.

252404017 is a deficient number, since it is larger than the sum of its proper divisors (1321679).

252404017 is a wasteful number, since it uses less digits than its factorization.

252404017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321678.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 252404017 is about 15887.2281093966. The cubic root of 252404017 is about 631.9733346451.

Adding to 252404017 its reverse (710404252), we get a palindrome (962808269).

It can be divided in two parts, 25 and 2404017, that added together give a palindrome (2404042).

The spelling of 252404017 in words is "two hundred fifty-two million, four hundred four thousand, seventeen".