1020531 has 8 divisors (see below), whose sum is σ = 1394064. Its totient is φ = 663680.

The previous prime is 1020529. The next prime is 1020541. The reversal of 1020531 is 1350201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020531 - 2¹ = 1020529 is a prime.

It is a super-2 number, since 2×1020531² = 2082967043922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4026 + ... + 4271.

It is an arithmetic number, because the mean of its divisors is an integer number (174258).

2^1020531 is an apocalyptic number.

1020531 is a deficient number, since it is larger than the sum of its proper divisors (373533).

1020531 is an equidigital number, since it uses as much as digits as its factorization.

1020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8341.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1020531 is about 1010.2133438042. The cubic root of 1020531 is about 100.6797357904.

Adding to 1020531 its reverse (1350201), we get a palindrome (2370732).

It can be divided in two parts, 1020 and 531, that added together give a palindrome (1551).

The spelling of 1020531 in words is "one million, twenty thousand, five hundred thirty-one".