531641 has 8 divisors (see below), whose sum is σ = 614304. Its totient is φ = 454720.

The previous prime is 531637. The next prime is 531667. The reversal of 531641 is 146135.

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 531641 - 2² = 531637 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (531611) 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, 1235 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (76788).

2⁵³¹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

531641 is a deficient number, since it is larger than the sum of its proper divisors (82663).

531641 is a wasteful number, since it uses less digits than its factorization.

531641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its digits is 360, while the sum is 20.

The square root of 531641 is about 729.1371613078. The cubic root of 531641 is about 81.0101597783.

Adding to 531641 its reverse (146135), we get a palindrome (677776).

The spelling of 531641 in words is "five hundred thirty-one thousand, six hundred forty-one".