252311533 has 4 divisors (see below), whose sum is σ = 252560160. Its totient is φ = 252062908.

The previous prime is 252311519. The next prime is 252311551. The reversal of 252311533 is 335113252.

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 252311533 - 2²⁵ = 218757101 is a prime.

It is a super-2 number, since 2×252311533² = 127322219369620178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252311498 and 252311507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252311593) 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, 122785 + ... + 124822.

It is an arithmetic number, because the mean of its divisors is an integer number (63140040).

Almost surely, 2^252311533 is an apocalyptic number.

It is an amenable number.

252311533 is a deficient number, since it is larger than the sum of its proper divisors (248627).

252311533 is a wasteful number, since it uses less digits than its factorization.

252311533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248626.

The product of its digits is 2700, while the sum is 25.

The square root of 252311533 is about 15884.3172028262. The cubic root of 252311533 is about 631.8961375616.

Adding to 252311533 its reverse (335113252), we get a palindrome (587424785).

The spelling of 252311533 in words is "two hundred fifty-two million, three hundred eleven thousand, five hundred thirty-three".