523005712505 has 8 divisors (see below), whose sum is σ = 629384780232. Its totient is φ = 417219286528.

The previous prime is 523005712501. The next prime is 523005712507. The reversal of 523005712505 is 505217500325.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1220524096 + 521785188409 = 34936^2 + 722347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 523005712505 - 2² = 523005712501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523005712501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148158494 + ... + 148162023.

It is an arithmetic number, because the mean of its divisors is an integer number (78673097529).

Almost surely, 2^523005712505 is an apocalyptic number.

It is an amenable number.

523005712505 is a deficient number, since it is larger than the sum of its proper divisors (106379067727).

523005712505 is a wasteful number, since it uses less digits than its factorization.

523005712505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296320875.

The product of its (nonzero) digits is 52500, while the sum is 35.

The spelling of 523005712505 in words is "five hundred twenty-three billion, five million, seven hundred twelve thousand, five hundred five".