52506247 has 2 divisors, whose sum is σ = 52506248. Its totient is φ = 52506246.

The previous prime is 52506221. The next prime is 52506257. The reversal of 52506247 is 74260525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52506247 - 2⁷ = 52506119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52506257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26253123 + 26253124.

It is an arithmetic number, because the mean of its divisors is an integer number (26253124).

Almost surely, 2^52506247 is an apocalyptic number.

52506247 is a deficient number, since it is larger than the sum of its proper divisors (1).

52506247 is an equidigital number, since it uses as much as digits as its factorization.

52506247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 52506247 is about 7246.1194442267. The cubic root of 52506247 is about 374.4584705134.

The spelling of 52506247 in words is "fifty-two million, five hundred six thousand, two hundred forty-seven".