531142877 has 2 divisors, whose sum is σ = 531142878. Its totient is φ = 531142876.

The previous prime is 531142867. The next prime is 531142897. The reversal of 531142877 is 778241135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460145401 + 70997476 = 21451^2 + 8426^2 .

It is a cyclic number.

It is not a de Polignac number, because 531142877 - 2⁴ = 531142861 is a prime.

It is a super-2 number, since 2×531142877² = 564225511575674258, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531142877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531142867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265571438 + 265571439.

It is an arithmetic number, because the mean of its divisors is an integer number (265571439).

Almost surely, 2^531142877 is an apocalyptic number.

It is an amenable number.

531142877 is a deficient number, since it is larger than the sum of its proper divisors (1).

531142877 is an equidigital number, since it uses as much as digits as its factorization.

531142877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 531142877 is about 23046.5372019312. The cubic root of 531142877 is about 809.8485094937.

The spelling of 531142877 in words is "five hundred thirty-one million, one hundred forty-two thousand, eight hundred seventy-seven".