252378449 has 2 divisors, whose sum is σ = 252378450. Its totient is φ = 252378448.

The previous prime is 252378437. The next prime is 252378461. The reversal of 252378449 is 944873252.

It is a balanced prime because it is at equal distance from previous prime (252378437) and next prime (252378461).

It can be written as a sum of positive squares in only one way, i.e., 152078224 + 100300225 = 12332^2 + 10015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252378449 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (252378499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126189224 + 126189225.

It is an arithmetic number, because the mean of its divisors is an integer number (126189225).

Almost surely, 2^252378449 is an apocalyptic number.

It is an amenable number.

252378449 is a deficient number, since it is larger than the sum of its proper divisors (1).

252378449 is an equidigital number, since it uses as much as digits as its factorization.

252378449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 252378449 is about 15886.4234174971. The cubic root of 252378449 is about 631.9519947314.

The spelling of 252378449 in words is "two hundred fifty-two million, three hundred seventy-eight thousand, four hundred forty-nine".