252780533 has 2 divisors, whose sum is σ = 252780534. Its totient is φ = 252780532.

The previous prime is 252780529. The next prime is 252780553. The reversal of 252780533 is 335087252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167365969 + 85414564 = 12937^2 + 9242^2 .

It is a cyclic number.

It is not a de Polignac number, because 252780533 - 2² = 252780529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252780493 and 252780502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252780553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126390266 + 126390267.

It is an arithmetic number, because the mean of its divisors is an integer number (126390267).

Almost surely, 2^252780533 is an apocalyptic number.

It is an amenable number.

252780533 is a deficient number, since it is larger than the sum of its proper divisors (1).

252780533 is an equidigital number, since it uses as much as digits as its factorization.

252780533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 252780533 is about 15899.0733377766. The cubic root of 252780533 is about 632.2874208413.

The spelling of 252780533 in words is "two hundred fifty-two million, seven hundred eighty thousand, five hundred thirty-three".