531520937 has 2 divisors, whose sum is σ = 531520938. Its totient is φ = 531520936.

The previous prime is 531520907. The next prime is 531520939. The reversal of 531520937 is 739025135.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307090576 + 224430361 = 17524^2 + 14981^2 .

It is a cyclic number.

It is not a de Polignac number, because 531520937 - 2¹⁰ = 531519913 is a prime.

Together with 531520939, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 531520897 and 531520906.

It is not a weakly prime, because it can be changed into another prime (531520939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265760468 + 265760469.

It is an arithmetic number, because the mean of its divisors is an integer number (265760469).

Almost surely, 2^531520937 is an apocalyptic number.

It is an amenable number.

531520937 is a deficient number, since it is larger than the sum of its proper divisors (1).

531520937 is an equidigital number, since it uses as much as digits as its factorization.

531520937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 531520937 is about 23054.7378427949. The cubic root of 531520937 is about 810.0406101674.

The spelling of 531520937 in words is "five hundred thirty-one million, five hundred twenty thousand, nine hundred thirty-seven".