252435811 has 4 divisors (see below), whose sum is σ = 258592824. Its totient is φ = 246278800.

The previous prime is 252435809. The next prime is 252435817. The reversal of 252435811 is 118534252.

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

It is not a de Polignac number, because 252435811 - 2¹ = 252435809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252435817) 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, 3078445 + ... + 3078526.

It is an arithmetic number, because the mean of its divisors is an integer number (64648206).

Almost surely, 2^252435811 is an apocalyptic number.

252435811 is a deficient number, since it is larger than the sum of its proper divisors (6157013).

252435811 is an equidigital number, since it uses as much as digits as its factorization.

252435811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157012.

The product of its digits is 9600, while the sum is 31.

The square root of 252435811 is about 15888.2286929664. The cubic root of 252435811 is about 631.9998689780. Note that the first 3 decimals are identical.

The spelling of 252435811 in words is "two hundred fifty-two million, four hundred thirty-five thousand, eight hundred eleven".