252071549 has 2 divisors, whose sum is σ = 252071550. Its totient is φ = 252071548.

The previous prime is 252071539. The next prime is 252071569. The reversal of 252071549 is 945170252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168220900 + 83850649 = 12970^2 + 9157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252071549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252071539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126035774 + 126035775.

It is an arithmetic number, because the mean of its divisors is an integer number (126035775).

Almost surely, 2^252071549 is an apocalyptic number.

It is an amenable number.

252071549 is a deficient number, since it is larger than the sum of its proper divisors (1).

252071549 is an equidigital number, since it uses as much as digits as its factorization.

252071549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 252071549 is about 15876.7612881217. The cubic root of 252071549 is about 631.6957331054.

The spelling of 252071549 in words is "two hundred fifty-two million, seventy-one thousand, five hundred forty-nine".