252775777 has 2 divisors, whose sum is σ = 252775778. Its totient is φ = 252775776.

The previous prime is 252775769. The next prime is 252775799. The reversal of 252775777 is 777577252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193655056 + 59120721 = 13916^2 + 7689^2 .

It is a cyclic number.

It is not a de Polignac number, because 252775777 - 2³ = 252775769 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252775777.

It is not a weakly prime, because it can be changed into another prime (252775717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126387888 + 126387889.

It is an arithmetic number, because the mean of its divisors is an integer number (126387889).

Almost surely, 2^252775777 is an apocalyptic number.

It is an amenable number.

252775777 is a deficient number, since it is larger than the sum of its proper divisors (1).

252775777 is an equidigital number, since it uses as much as digits as its factorization.

252775777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680700, while the sum is 49.

The square root of 252775777 is about 15898.9237686077. The cubic root of 252775777 is about 632.2834553752.

The spelling of 252775777 in words is "two hundred fifty-two million, seven hundred seventy-five thousand, seven hundred seventy-seven".