531020 has 24 divisors (see below), whose sum is σ = 1274784. Its totient is φ = 182016.

The previous prime is 531017. The next prime is 531023. The reversal of 531020 is 20135.

It is an interprime number because it is at equal distance from previous prime (531017) and next prime (531023).

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 530992 and 531010.

It is not an unprimeable number, because it can be changed into a prime (531023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757 + ... + 2036.

It is an arithmetic number, because the mean of its divisors is an integer number (53116).

2⁵³¹⁰²⁰ is an apocalyptic number.

It is an amenable number.

531020 is an abundant number, since it is smaller than the sum of its proper divisors (743764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531020 is a wasteful number, since it uses less digits than its factorization.

531020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3809 (or 3807 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 531020 is about 728.7111910764. The cubic root of 531020 is about 80.9786053336.

Adding to 531020 its reverse (20135), we get a palindrome (551155).

The spelling of 531020 in words is "five hundred thirty-one thousand, twenty".