526008571997 has 4 divisors (see below), whose sum is σ = 526036634076. Its totient is φ = 525980509920.

The previous prime is 526008571993. The next prime is 526008572017. The reversal of 526008571997 is 799175800625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98725410436 + 427283161561 = 314206^2 + 653669^2 .

It is a cyclic number.

It is not a de Polignac number, because 526008571997 - 2² = 526008571993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526008571993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14002904 + ... + 14040417.

It is an arithmetic number, because the mean of its divisors is an integer number (131509158519).

Almost surely, 2^526008571997 is an apocalyptic number.

It is an amenable number.

526008571997 is a deficient number, since it is larger than the sum of its proper divisors (28062079).

526008571997 is a wasteful number, since it uses less digits than its factorization.

526008571997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28062078.

The product of its (nonzero) digits is 9525600, while the sum is 59.

The spelling of 526008571997 in words is "five hundred twenty-six billion, eight million, five hundred seventy-one thousand, nine hundred ninety-seven".