531872893 has 2 divisors, whose sum is σ = 531872894. Its totient is φ = 531872892.

The previous prime is 531872879. The next prime is 531872899. The reversal of 531872893 is 398278135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425927044 + 105945849 = 20638^2 + 10293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531872893 is a prime.

It is equal to p_27943795 and since 531872893 and 27943795 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531872899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265936446 + 265936447.

It is an arithmetic number, because the mean of its divisors is an integer number (265936447).

Almost surely, 2^531872893 is an apocalyptic number.

It is an amenable number.

531872893 is a deficient number, since it is larger than the sum of its proper divisors (1).

531872893 is an equidigital number, since it uses as much as digits as its factorization.

531872893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 531872893 is about 23062.3696310678. The cubic root of 531872893 is about 810.2193649624.

The spelling of 531872893 in words is "five hundred thirty-one million, eight hundred seventy-two thousand, eight hundred ninety-three".