5556015551 has 2 divisors, whose sum is σ = 5556015552. Its totient is φ = 5556015550.

The previous prime is 5556015533. The next prime is 5556015557. The reversal of 5556015551 is 1555106555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5556015551 - 2¹⁸ = 5555753407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5556015557) 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, 2778007775 + 2778007776.

It is an arithmetic number, because the mean of its divisors is an integer number (2778007776).

Almost surely, 2^5556015551 is an apocalyptic number.

5556015551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556015551 is an equidigital number, since it uses as much as digits as its factorization.

5556015551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93750, while the sum is 38.

The square root of 5556015551 is about 74538.6849293707. The cubic root of 5556015551 is about 1771.1464957654.

It can be divided in two parts, 555 and 6015551, that added together give a palindrome (6016106).

The spelling of 5556015551 in words is "five billion, five hundred fifty-six million, fifteen thousand, five hundred fifty-one".