531487 has 8 divisors (see below), whose sum is σ = 610560. Its totient is φ = 457560.

The previous prime is 531481. The next prime is 531497. The reversal of 531487 is 784135.

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 531487 - 2⁷ = 531359 is a prime.

It is an Ulam number.

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 (531481) 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, 1063 + ... + 1480.

It is an arithmetic number, because the mean of its divisors is an integer number (76320).

2⁵³¹⁴⁸⁷ is an apocalyptic number.

531487 is a deficient number, since it is larger than the sum of its proper divisors (79073).

531487 is a wasteful number, since it uses less digits than its factorization.

531487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573.

The product of its digits is 3360, while the sum is 28.

The square root of 531487 is about 729.0315493859. The cubic root of 531487 is about 81.0023369747.

It can be divided in two parts, 53 and 1487, that added together give a triangular number (1540 = T₅₅).

The spelling of 531487 in words is "five hundred thirty-one thousand, four hundred eighty-seven".