523507601 has 4 divisors (see below), whose sum is σ = 530679012. Its totient is φ = 516336192.

The previous prime is 523507597. The next prime is 523507619. The reversal of 523507601 is 106705325.

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 219040000 + 304467601 = 14800^2 + 17449^2 .

It is a cyclic number.

It is not a de Polignac number, because 523507601 - 2² = 523507597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523507631) 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, 3585596 + ... + 3585741.

It is an arithmetic number, because the mean of its divisors is an integer number (132669753).

Almost surely, 2^523507601 is an apocalyptic number.

It is an amenable number.

523507601 is a deficient number, since it is larger than the sum of its proper divisors (7171411).

523507601 is an equidigital number, since it uses as much as digits as its factorization.

523507601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171410.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 523507601 is about 22880.2884815730. The cubic root of 523507601 is about 805.9491914231.

The spelling of 523507601 in words is "five hundred twenty-three million, five hundred seven thousand, six hundred one".