531490 has 8 divisors (see below), whose sum is σ = 956700. Its totient is φ = 212592.

The previous prime is 531481. The next prime is 531497. The reversal of 531490 is 94135.

It can be written as a sum of positive squares in 2 ways, for example, as 531441 + 49 = 729^2 + 7^2 .

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

It is a d-powerful number, because it can be written as 5 + 3³ + 4² + 1 + 9⁶ + 0 .

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (531497) 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, 26565 + ... + 26584.

531490 is a Friedman number, since it can be written as 4+9*(5+3^10), using all its digits and the basic arithmetic operations.

2⁵³¹⁴⁹⁰ is an apocalyptic number.

531490 is a deficient number, since it is larger than the sum of its proper divisors (425210).

531490 is a wasteful number, since it uses less digits than its factorization.

531490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53156.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 531490 is about 729.0336069071. The cubic root of 531490 is about 81.0024893814.

The spelling of 531490 in words is "five hundred thirty-one thousand, four hundred ninety".