531945 has 12 divisors (see below), whose sum is σ = 922116. Its totient is φ = 283680.

The previous prime is 531919. The next prime is 531977. The reversal of 531945 is 549135.

531945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 404496 = 357^2 + 636^2 .

It is not a de Polignac number, because 531945 - 2⁸ = 531689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5866 + ... + 5955.

It is an arithmetic number, because the mean of its divisors is an integer number (76843).

2⁵³¹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

531945 is a deficient number, since it is larger than the sum of its proper divisors (390171).

531945 is a wasteful number, since it uses less digits than its factorization.

531945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11832 (or 11829 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 531945 is about 729.3455970937. The cubic root of 531945 is about 81.0255977625.

The spelling of 531945 in words is "five hundred thirty-one thousand, nine hundred forty-five".