531736949 has 2 divisors, whose sum is σ = 531736950. Its totient is φ = 531736948.

The previous prime is 531736943. The next prime is 531736951. The reversal of 531736949 is 949637135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523585924 + 8151025 = 22882^2 + 2855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531736949 is a prime.

Together with 531736951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531736943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265868474 + 265868475.

It is an arithmetic number, because the mean of its divisors is an integer number (265868475).

Almost surely, 2^531736949 is an apocalyptic number.

It is an amenable number.

531736949 is a deficient number, since it is larger than the sum of its proper divisors (1).

531736949 is an equidigital number, since it uses as much as digits as its factorization.

531736949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 47.

The square root of 531736949 is about 23059.4221306606. The cubic root of 531736949 is about 810.1503297673.

The spelling of 531736949 in words is "five hundred thirty-one million, seven hundred thirty-six thousand, nine hundred forty-nine".