3731526521 has 2 divisors, whose sum is σ = 3731526522. Its totient is φ = 3731526520.

The previous prime is 3731526511. The next prime is 3731526529. The reversal of 3731526521 is 1256251373.

3731526521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2158531600 + 1572994921 = 46460^2 + 39661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3731526521 is a prime.

It is not a weakly prime, because it can be changed into another prime (3731526529) 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, 1865763260 + 1865763261.

It is an arithmetic number, because the mean of its divisors is an integer number (1865763261).

Almost surely, 2^3731526521 is an apocalyptic number.

It is an amenable number.

3731526521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3731526521 is an equidigital number, since it uses as much as digits as its factorization.

3731526521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 3731526521 is about 61086.2220226460. Note that the first 3 decimals coincide. The cubic root of 3731526521 is about 1551.0608791392.

Adding to 3731526521 its reverse (1256251373), we get a palindrome (4987777894).

It can be divided in two parts, 37315 and 26521, that added together give a palindrome (63836).

The spelling of 3731526521 in words is "three billion, seven hundred thirty-one million, five hundred twenty-six thousand, five hundred twenty-one".