531653 has 4 divisors (see below), whose sum is σ = 546060. Its totient is φ = 517248.

The previous prime is 531637. The next prime is 531667. The reversal of 531653 is 356135.

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

It can be written as a sum of positive squares in 2 ways, for example, as 407044 + 124609 = 638^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 531653 - 2⁴ = 531637 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531613) 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, 7148 + ... + 7221.

It is an arithmetic number, because the mean of its divisors is an integer number (136515).

2⁵³¹⁶⁵³ is an apocalyptic number.

It is an amenable number.

531653 is a deficient number, since it is larger than the sum of its proper divisors (14407).

531653 is a wasteful number, since it uses less digits than its factorization.

531653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14406.

The product of its digits is 1350, while the sum is 23.

The square root of 531653 is about 729.1453901658. The cubic root of 531653 is about 81.0107692840.

Adding to 531653 its reverse (356135), we get a palindrome (887788).

The spelling of 531653 in words is "five hundred thirty-one thousand, six hundred fifty-three".