252442540213 has 8 divisors (see below), whose sum is σ = 267394129560. Its totient is φ = 237502287360.

The previous prime is 252442540187. The next prime is 252442540279. The reversal of 252442540213 is 312045244252.

It can be written as a sum of positive squares in 4 ways, for example, as 127393314084 + 125049226129 = 356922^2 + 353623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252442540213 - 2³³ = 243852605621 is a prime.

It is a super-2 number, since 2×252442540213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252442540913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2788248 + ... + 2877361.

It is an arithmetic number, because the mean of its divisors is an integer number (33424266195).

Almost surely, 2^252442540213 is an apocalyptic number.

It is an amenable number.

252442540213 is a deficient number, since it is larger than the sum of its proper divisors (14951589347).

252442540213 is a wasteful number, since it uses less digits than its factorization.

252442540213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668247.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 252442540213 its reverse (312045244252), we get a palindrome (564487784465).

The spelling of 252442540213 in words is "two hundred fifty-two billion, four hundred forty-two million, five hundred forty thousand, two hundred thirteen".