526252853821 has 4 divisors (see below), whose sum is σ = 526255215292. Its totient is φ = 526250492352.

The previous prime is 526252853809. The next prime is 526252853827. The reversal of 526252853821 is 128358252625.

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 480963055225 + 45289798596 = 693515^2 + 212814^2 .

It is a cyclic number.

It is not a de Polignac number, because 526252853821 - 2¹⁵ = 526252821053 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 (526252853827) 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, 807036 + ... + 1305301.

It is an arithmetic number, because the mean of its divisors is an integer number (131563803823).

Almost surely, 2^526252853821 is an apocalyptic number.

It is an amenable number.

526252853821 is a deficient number, since it is larger than the sum of its proper divisors (2361471).

526252853821 is a wasteful number, since it uses less digits than its factorization.

526252853821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361470.

The product of its digits is 2304000, while the sum is 49.

The spelling of 526252853821 in words is "five hundred twenty-six billion, two hundred fifty-two million, eight hundred fifty-three thousand, eight hundred twenty-one".