5581367551 has 2 divisors, whose sum is σ = 5581367552. Its totient is φ = 5581367550.

The previous prime is 5581367543. The next prime is 5581367573. The reversal of 5581367551 is 1557631855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5581367551 - 2³ = 5581367543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5581367501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790683775 + 2790683776.

It is an arithmetic number, because the mean of its divisors is an integer number (2790683776).

Almost surely, 2^5581367551 is an apocalyptic number.

5581367551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581367551 is an equidigital number, since it uses as much as digits as its factorization.

5581367551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630000, while the sum is 46.

The square root of 5581367551 is about 74708.5507221228. The cubic root of 5581367551 is about 1773.8363120145.

The spelling of 5581367551 in words is "five billion, five hundred eighty-one million, three hundred sixty-seven thousand, five hundred fifty-one".