526131587 has 2 divisors, whose sum is σ = 526131588. Its totient is φ = 526131586.

The previous prime is 526131581. The next prime is 526131607. The reversal of 526131587 is 785131625.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 526131587 - 2¹² = 526127491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 526131587.

It is not a weakly prime, because it can be changed into another prime (526131581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263065793 + 263065794.

It is an arithmetic number, because the mean of its divisors is an integer number (263065794).

Almost surely, 2^526131587 is an apocalyptic number.

526131587 is a deficient number, since it is larger than the sum of its proper divisors (1).

526131587 is an equidigital number, since it uses as much as digits as its factorization.

526131587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 38.

The square root of 526131587 is about 22937.5584358929. The cubic root of 526131587 is about 807.2935054624.

Adding to 526131587 its sum of digits (38), we get a palindrome (526131625).

The spelling of 526131587 in words is "five hundred twenty-six million, one hundred thirty-one thousand, five hundred eighty-seven".