55530000251 has 16 divisors (see below), whose sum is σ = 66930375168. Its totient is φ = 45446544000.

The previous prime is 55530000247. The next prime is 55530000271. The reversal of 55530000251 is 15200003555.

It is not a de Polignac number, because 55530000251 - 2² = 55530000247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55530000251.

It is not an unprimeable number, because it can be changed into a prime (55530000241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6451175 + ... + 6459776.

It is an arithmetic number, because the mean of its divisors is an integer number (4183148448).

Almost surely, 2^55530000251 is an apocalyptic number.

55530000251 is a deficient number, since it is larger than the sum of its proper divisors (11400374917).

55530000251 is a wasteful number, since it uses less digits than its factorization.

55530000251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911002.

The product of its (nonzero) digits is 3750, while the sum is 26.

The spelling of 55530000251 in words is "fifty-five billion, five hundred thirty million, two hundred fifty-one", and thus it is an aban number.