523155523 has 4 divisors (see below), whose sum is σ = 570715128. Its totient is φ = 475595920.

The previous prime is 523155517. The next prime is 523155541. The reversal of 523155523 is 325551325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523155523 - 2¹⁷ = 523024451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523155223) 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, 23779786 + ... + 23779807.

It is an arithmetic number, because the mean of its divisors is an integer number (142678782).

Almost surely, 2^523155523 is an apocalyptic number.

523155523 is a deficient number, since it is larger than the sum of its proper divisors (47559605).

523155523 is a wasteful number, since it uses less digits than its factorization.

523155523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47559604.

The product of its digits is 22500, while the sum is 31.

The square root of 523155523 is about 22872.5932722986. The cubic root of 523155523 is about 805.7684741391.

The spelling of 523155523 in words is "five hundred twenty-three million, one hundred fifty-five thousand, five hundred twenty-three".