523253531 has 4 divisors (see below), whose sum is σ = 524011464. Its totient is φ = 522495600.

The previous prime is 523253509. The next prime is 523253567. The reversal of 523253531 is 135352325.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523253531 is a prime.

It is a super-3 number, since 3×523253531³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 523253494 and 523253503.

It is not an unprimeable number, because it can be changed into a prime (523253501) 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, 377930 + ... + 379311.

It is an arithmetic number, because the mean of its divisors is an integer number (131002866).

Almost surely, 2^523253531 is an apocalyptic number.

523253531 is a deficient number, since it is larger than the sum of its proper divisors (757933).

523253531 is an equidigital number, since it uses as much as digits as its factorization.

523253531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757932.

The product of its digits is 13500, while the sum is 29.

The square root of 523253531 is about 22874.7356487458. The cubic root of 523253531 is about 805.8187885753.

The spelling of 523253531 in words is "five hundred twenty-three million, two hundred fifty-three thousand, five hundred thirty-one".