252784739 has 2 divisors, whose sum is σ = 252784740. Its totient is φ = 252784738.

The previous prime is 252784723. The next prime is 252784751. The reversal of 252784739 is 937487252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252784739 - 2⁴ = 252784723 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 252784693 and 252784702.

It is not a weakly prime, because it can be changed into another prime (252784799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126392369 + 126392370.

It is an arithmetic number, because the mean of its divisors is an integer number (126392370).

Almost surely, 2^252784739 is an apocalyptic number.

252784739 is a deficient number, since it is larger than the sum of its proper divisors (1).

252784739 is an equidigital number, since it uses as much as digits as its factorization.

252784739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 252784739 is about 15899.2056090863. The cubic root of 252784739 is about 632.2909276859.

The spelling of 252784739 in words is "two hundred fifty-two million, seven hundred eighty-four thousand, seven hundred thirty-nine".