5551199555 has 16 divisors (see below), whose sum is σ = 7279200000. Its totient is φ = 4030472160.

The previous prime is 5551199527. The next prime is 5551199573. The reversal of 5551199555 is 5559911555.

It is not a de Polignac number, because 5551199555 - 2⁶ = 5551199491 is a prime.

It is a zygodrome in base 10.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51305 + ... + 117194.

It is an arithmetic number, because the mean of its divisors is an integer number (454950000).

Almost surely, 2^5551199555 is an apocalyptic number.

5551199555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5551199555 is a deficient number, since it is larger than the sum of its proper divisors (1728000445).

5551199555 is a wasteful number, since it uses less digits than its factorization.

5551199555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169114.

The product of its digits is 1265625, while the sum is 50.

The square root of 5551199555 is about 74506.3725798002. The cubic root of 5551199555 is about 1770.6346001378.

The spelling of 5551199555 in words is "five billion, five hundred fifty-one million, one hundred ninety-nine thousand, five hundred fifty-five".