523475521 has 4 divisors (see below), whose sum is σ = 523532592. Its totient is φ = 523418452.

The previous prime is 523475503. The next prime is 523475531. The reversal of 523475521 is 125574325.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 523475521 - 2¹¹ = 523473473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523475501) 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, 11311 + ... + 34276.

It is an arithmetic number, because the mean of its divisors is an integer number (130883148).

Almost surely, 2^523475521 is an apocalyptic number.

It is an amenable number.

523475521 is a deficient number, since it is larger than the sum of its proper divisors (57071).

523475521 is a wasteful number, since it uses less digits than its factorization.

523475521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57070.

The product of its digits is 42000, while the sum is 34.

The square root of 523475521 is about 22879.5874307209. The cubic root of 523475521 is about 805.9327285114.

The spelling of 523475521 in words is "five hundred twenty-three million, four hundred seventy-five thousand, five hundred twenty-one".