55055500251 has 8 divisors (see below), whose sum is σ = 74441240064. Its totient is φ = 36186713640.

The previous prime is 55055500211. The next prime is 55055500277. The reversal of 55055500251 is 15200555055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55055500251 - 2¹⁴ = 55055483867 is a prime.

It is a super-2 number, since 2×55055500251² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55055500211) 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 in 7 ways as a sum of consecutive naturals, for example, 129238051 + ... + 129238476.

It is an arithmetic number, because the mean of its divisors is an integer number (9305155008).

Almost surely, 2^55055500251 is an apocalyptic number.

55055500251 is a deficient number, since it is larger than the sum of its proper divisors (19385739813).

55055500251 is a wasteful number, since it uses less digits than its factorization.

55055500251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258476601.

The product of its (nonzero) digits is 31250, while the sum is 33.

The spelling of 55055500251 in words is "fifty-five billion, fifty-five million, five hundred thousand, two hundred fifty-one".