252540011 has 4 divisors (see below), whose sum is σ = 255736800. Its totient is φ = 249343224.

The previous prime is 252539983. The next prime is 252540017. The reversal of 252540011 is 110045252.

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 252540011 - 2¹⁸ = 252277867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252540017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598276 + ... + 1598433.

It is an arithmetic number, because the mean of its divisors is an integer number (63934200).

Almost surely, 2^252540011 is an apocalyptic number.

252540011 is a deficient number, since it is larger than the sum of its proper divisors (3196789).

252540011 is an equidigital number, since it uses as much as digits as its factorization.

252540011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196788.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 252540011 is about 15891.5075118756. The cubic root of 252540011 is about 632.0868156055.

Adding to 252540011 its reverse (110045252), we get a palindrome (362585263).

The spelling of 252540011 in words is "two hundred fifty-two million, five hundred forty thousand, eleven".