537984721 has 2 divisors, whose sum is σ = 537984722. Its totient is φ = 537984720.

The previous prime is 537984659. The next prime is 537984749. The reversal of 537984721 is 127489735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295840000 + 242144721 = 17200^2 + 15561^2 .

It is a cyclic number.

It is not a de Polignac number, because 537984721 - 2¹⁷ = 537853649 is a prime.

It is not a weakly prime, because it can be changed into another prime (537984781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268992360 + 268992361.

It is an arithmetic number, because the mean of its divisors is an integer number (268992361).

Almost surely, 2^537984721 is an apocalyptic number.

It is an amenable number.

537984721 is a deficient number, since it is larger than the sum of its proper divisors (1).

537984721 is an equidigital number, since it uses as much as digits as its factorization.

537984721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 537984721 is about 23194.4976449157. The cubic root of 537984721 is about 813.3110020109.

It can be divided in two parts, 5379 and 84721, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 537984721 in words is "five hundred thirty-seven million, nine hundred eighty-four thousand, seven hundred twenty-one".