531813053 has 4 divisors (see below), whose sum is σ = 531861600. Its totient is φ = 531764508.

The previous prime is 531813041. The next prime is 531813109. The reversal of 531813053 is 350318135.

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 531813053 - 2²⁴ = 515035837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531893053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776 + ... + 32622.

It is an arithmetic number, because the mean of its divisors is an integer number (132965400).

Almost surely, 2^531813053 is an apocalyptic number.

It is an amenable number.

531813053 is a deficient number, since it is larger than the sum of its proper divisors (48547).

531813053 is a wasteful number, since it uses less digits than its factorization.

531813053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48546.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 531813053 is about 23061.0722430680. The cubic root of 531813053 is about 810.1889784134.

The spelling of 531813053 in words is "five hundred thirty-one million, eight hundred thirteen thousand, fifty-three".