3551244581 has 2 divisors, whose sum is σ = 3551244582. Its totient is φ = 3551244580.

The previous prime is 3551244539. The next prime is 3551244607. The reversal of 3551244581 is 1854421553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3550372225 + 872356 = 59585^2 + 934^2 .

It is a cyclic number.

It is not a de Polignac number, because 3551244581 - 2⁶ = 3551244517 is a prime.

It is a super-2 number, since 2×3551244581² = 25222676148163731122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3551244181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775622290 + 1775622291.

It is an arithmetic number, because the mean of its divisors is an integer number (1775622291).

Almost surely, 2^3551244581 is an apocalyptic number.

It is an amenable number.

3551244581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3551244581 is an equidigital number, since it uses as much as digits as its factorization.

3551244581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96000, while the sum is 38.

The square root of 3551244581 is about 59592.3198155601. The cubic root of 3551244581 is about 1525.6685530191.

The spelling of 3551244581 in words is "three billion, five hundred fifty-one million, two hundred forty-four thousand, five hundred eighty-one".