523055531 has 4 divisors (see below), whose sum is σ = 523350672. Its totient is φ = 522760392.

The previous prime is 523055501. The next prime is 523055537. The reversal of 523055531 is 135550325.

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 523055531 - 2¹⁴ = 523039147 is a prime.

It is a super-2 number, since 2×523055531² = 547174177019383922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 523055494 and 523055503.

It is not an unprimeable number, because it can be changed into a prime (523055537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144896 + ... + 148461.

It is an arithmetic number, because the mean of its divisors is an integer number (130837668).

Almost surely, 2^523055531 is an apocalyptic number.

523055531 is a deficient number, since it is larger than the sum of its proper divisors (295141).

523055531 is a wasteful number, since it uses less digits than its factorization.

523055531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295140.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 523055531 is about 22870.4073203780. The cubic root of 523055531 is about 805.7171346989.

The spelling of 523055531 in words is "five hundred twenty-three million, fifty-five thousand, five hundred thirty-one".