52506257 has 2 divisors, whose sum is σ = 52506258. Its totient is φ = 52506256.

The previous prime is 52506247. The next prime is 52506271. The reversal of 52506257 is 75260525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31013761 + 21492496 = 5569^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 52506257 - 2¹² = 52502161 is a prime.

It is not a weakly prime, because it can be changed into another prime (52506247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26253128 + 26253129.

It is an arithmetic number, because the mean of its divisors is an integer number (26253129).

Almost surely, 2^52506257 is an apocalyptic number.

It is an amenable number.

52506257 is a deficient number, since it is larger than the sum of its proper divisors (1).

52506257 is an equidigital number, since it uses as much as digits as its factorization.

52506257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 52506257 is about 7246.1201342512. The cubic root of 52506257 is about 374.4584942857.

The spelling of 52506257 in words is "fifty-two million, five hundred six thousand, two hundred fifty-seven".