252972790549 has 2 divisors, whose sum is σ = 252972790550. Its totient is φ = 252972790548.

The previous prime is 252972790529. The next prime is 252972790559. The reversal of 252972790549 is 945097279252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130759622449 + 122213168100 = 361607^2 + 349590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252972790549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252972790519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126486395274 + 126486395275.

It is an arithmetic number, because the mean of its divisors is an integer number (126486395275).

Almost surely, 2^252972790549 is an apocalyptic number.

It is an amenable number.

252972790549 is a deficient number, since it is larger than the sum of its proper divisors (1).

252972790549 is an equidigital number, since it uses as much as digits as its factorization.

252972790549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 252972790549 in words is "two hundred fifty-two billion, nine hundred seventy-two million, seven hundred ninety thousand, five hundred forty-nine".