55000005551 has 2 divisors, whose sum is σ = 55000005552. Its totient is φ = 55000005550.

The previous prime is 55000005539. The next prime is 55000005559. The reversal of 55000005551 is 15550000055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55000005551 - 2¹⁴ = 54999989167 is a prime.

It is a super-2 number, since 2×55000005551² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55000005551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55000005559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500002775 + 27500002776.

It is an arithmetic number, because the mean of its divisors is an integer number (27500002776).

Almost surely, 2^55000005551 is an apocalyptic number.

55000005551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55000005551 is an equidigital number, since it uses as much as digits as its factorization.

55000005551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3125, while the sum is 26.

The spelling of 55000005551 in words is "fifty-five billion, five thousand, five hundred fifty-one".