531149 has 4 divisors (see below), whose sum is σ = 535164. Its totient is φ = 527136.

The previous prime is 531143. The next prime is 531163. The reversal of 531149 is 941135.

It is a happy number.

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 220900 + 310249 = 470^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 531149 - 2⁴ = 531133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 531149.

It is not an unprimeable number, because it can be changed into a prime (531143) 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, 1802 + ... + 2075.

It is an arithmetic number, because the mean of its divisors is an integer number (133791).

2⁵³¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

531149 is a deficient number, since it is larger than the sum of its proper divisors (4015).

531149 is a wasteful number, since it uses less digits than its factorization.

531149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014.

The product of its digits is 540, while the sum is 23.

The square root of 531149 is about 728.7996981339. The cubic root of 531149 is about 80.9851621452.

The spelling of 531149 in words is "five hundred thirty-one thousand, one hundred forty-nine".