3521721743 has 2 divisors, whose sum is σ = 3521721744. Its totient is φ = 3521721742.

The previous prime is 3521721713. The next prime is 3521721757. The reversal of 3521721743 is 3471271253.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3521721743 - 2¹⁴ = 3521705359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3521721713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760860871 + 1760860872.

It is an arithmetic number, because the mean of its divisors is an integer number (1760860872).

Almost surely, 2^3521721743 is an apocalyptic number.

3521721743 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521721743 is an equidigital number, since it uses as much as digits as its factorization.

3521721743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 35.

The square root of 3521721743 is about 59344.0961090486. The cubic root of 3521721743 is about 1521.4289630737.

Adding to 3521721743 its reverse (3471271253), we get a palindrome (6992992996).

The spelling of 3521721743 in words is "three billion, five hundred twenty-one million, seven hundred twenty-one thousand, seven hundred forty-three".