537940243 has 2 divisors, whose sum is σ = 537940244. Its totient is φ = 537940242.

The previous prime is 537940223. The next prime is 537940283. The reversal of 537940243 is 342049735.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 537940243 - 2⁵ = 537940211 is a prime.

It is not a weakly prime, because it can be changed into another prime (537940223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268970121 + 268970122.

It is an arithmetic number, because the mean of its divisors is an integer number (268970122).

Almost surely, 2^537940243 is an apocalyptic number.

537940243 is a deficient number, since it is larger than the sum of its proper divisors (1).

537940243 is an equidigital number, since it uses as much as digits as its factorization.

537940243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 537940243 is about 23193.5388201111. The cubic root of 537940243 is about 813.2885878404.

Adding to 537940243 its reverse (342049735), we get a palindrome (879989978).

The spelling of 537940243 in words is "five hundred thirty-seven million, nine hundred forty thousand, two hundred forty-three".