526505897 has 2 divisors, whose sum is σ = 526505898. Its totient is φ = 526505896.

The previous prime is 526505879. The next prime is 526505923. The reversal of 526505897 is 798505625.

Together with previous prime (526505879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361152016 + 165353881 = 19004^2 + 12859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-526505897 is a prime.

It is not a weakly prime, because it can be changed into another prime (526502897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263252948 + 263252949.

It is an arithmetic number, because the mean of its divisors is an integer number (263252949).

Almost surely, 2^526505897 is an apocalyptic number.

It is an amenable number.

526505897 is a deficient number, since it is larger than the sum of its proper divisors (1).

526505897 is an equidigital number, since it uses as much as digits as its factorization.

526505897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 47.

The square root of 526505897 is about 22945.7163104576. The cubic root of 526505897 is about 807.4849065031.

The spelling of 526505897 in words is "five hundred twenty-six million, five hundred five thousand, eight hundred ninety-seven".