531077 has 4 divisors (see below), whose sum is σ = 549420. Its totient is φ = 512736.

The previous prime is 531071. The next prime is 531079. The reversal of 531077 is 770135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 770135 = 5 ⋅154027.

It can be written as a sum of positive squares in 2 ways, for example, as 201601 + 329476 = 449^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 531077 - 2¹⁶ = 465541 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9128 + ... + 9185.

It is an arithmetic number, because the mean of its divisors is an integer number (137355).

2⁵³¹⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

531077 is a deficient number, since it is larger than the sum of its proper divisors (18343).

531077 is a wasteful number, since it uses less digits than its factorization.

531077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18342.

The product of its (nonzero) digits is 735, while the sum is 23.

The square root of 531077 is about 728.7503001715. The cubic root of 531077 is about 80.9815026603.

The spelling of 531077 in words is "five hundred thirty-one thousand, seventy-seven".