3551474088521 has 2 divisors, whose sum is σ = 3551474088522. Its totient is φ = 3551474088520.

The previous prime is 3551474088451. The next prime is 3551474088527. The reversal of 3551474088521 is 1258804741553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3475222998025 + 76251090496 = 1864195^2 + 276136^2 .

It is a cyclic number.

It is not a de Polignac number, because 3551474088521 - 2³⁸ = 3276596181577 is a prime.

It is a super-2 number, since 2×3551474088521² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3551474088527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775737044260 + 1775737044261.

It is an arithmetic number, because the mean of its divisors is an integer number (1775737044261).

Almost surely, 2^{3551474088521} is an apocalyptic number.

It is an amenable number.

3551474088521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551474088521 is an equidigital number, since it uses as much as digits as its factorization.

3551474088521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376000, while the sum is 53.

The spelling of 3551474088521 in words is "three trillion, five hundred fifty-one billion, four hundred seventy-four million, eighty-eight thousand, five hundred twenty-one".