252011005 has 4 divisors (see below), whose sum is σ = 302413212. Its totient is φ = 201608800.

The previous prime is 252010981. The next prime is 252011017. The reversal of 252011005 is 500110252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 199317924 + 52693081 = 14118^2 + 7259^2 .

It is not a de Polignac number, because 252011005 - 2⁵ = 252010973 is a prime.

It is a super-2 number, since 2×252011005² = 127019093282220050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252011005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25201096 + ... + 25201105.

It is an arithmetic number, because the mean of its divisors is an integer number (75603303).

Almost surely, 2^252011005 is an apocalyptic number.

It is an amenable number.

252011005 is a deficient number, since it is larger than the sum of its proper divisors (50402207).

252011005 is an equidigital number, since it uses as much as digits as its factorization.

252011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50402206.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 252011005 is about 15874.8544875221. The cubic root of 252011005 is about 631.6451542796.

Adding to 252011005 its reverse (500110252), we get a palindrome (752121257).

The spelling of 252011005 in words is "two hundred fifty-two million, eleven thousand, five".