526513009 has 16 divisors (see below), whose sum is σ = 625464000. Its totient is φ = 437814720.

The previous prime is 526513007. The next prime is 526513037. The reversal of 526513009 is 900315625.

It is not a de Polignac number, because 526513009 - 2¹ = 526513007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (526513003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37374 + ... + 49495.

It is an arithmetic number, because the mean of its divisors is an integer number (39091500).

Almost surely, 2^526513009 is an apocalyptic number.

It is an amenable number.

526513009 is a deficient number, since it is larger than the sum of its proper divisors (98950991).

526513009 is a wasteful number, since it uses less digits than its factorization.

526513009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86928.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 526513009 is about 22945.8712843945. The cubic root of 526513009 is about 807.4885423009.

The spelling of 526513009 in words is "five hundred twenty-six million, five hundred thirteen thousand, nine".