523885820501 has 4 divisors (see below), whose sum is σ = 526914062412. Its totient is φ = 520857578592.

The previous prime is 523885820489. The next prime is 523885820503. The reversal of 523885820501 is 105028588325.

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 476175903025 + 47709917476 = 690055^2 + 218426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523885820501 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 (523885820503) 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, 1514120696 + ... + 1514121041.

It is an arithmetic number, because the mean of its divisors is an integer number (131728515603).

Almost surely, 2^523885820501 is an apocalyptic number.

It is an amenable number.

523885820501 is a deficient number, since it is larger than the sum of its proper divisors (3028241911).

523885820501 is a wasteful number, since it uses less digits than its factorization.

523885820501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028241910.

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 523885820501 in words is "five hundred twenty-three billion, eight hundred eighty-five million, eight hundred twenty thousand, five hundred one".