55055005551 has 192 divisors, whose sum is σ = 104955002880. Its totient is φ = 27030620160.

The previous prime is 55055005519. The next prime is 55055005561. The reversal of 55055005551 is 15550055055.

It is a happy number.

55055005551 is a `hidden beast` number, since 5 + 5 + 0 + 550 + 0 + 55 + 51 = 666.

It is not a de Polignac number, because 55055005551 - 2⁵ = 55055005519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055005561) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 96757195 + ... + 96757763.

It is an arithmetic number, because the mean of its divisors is an integer number (546640640).

Almost surely, 2^55055005551 is an apocalyptic number.

55055005551 is a deficient number, since it is larger than the sum of its proper divisors (49899997329).

55055005551 is a wasteful number, since it uses less digits than its factorization.

55055005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 55055005551 in words is "fifty-five billion, fifty-five million, five thousand, five hundred fifty-one".