55188214951 has 4 divisors (see below), whose sum is σ = 55518683472. Its totient is φ = 54857746432.

The previous prime is 55188214901. The next prime is 55188214987. The reversal of 55188214951 is 15941288155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55188214951 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55188214895 and 55188214904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55188214901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165234010 + ... + 165234343.

It is an arithmetic number, because the mean of its divisors is an integer number (13879670868).

Almost surely, 2^55188214951 is an apocalyptic number.

55188214951 is a deficient number, since it is larger than the sum of its proper divisors (330468521).

55188214951 is a wasteful number, since it uses less digits than its factorization.

55188214951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330468520.

The product of its digits is 576000, while the sum is 49.

The spelling of 55188214951 in words is "fifty-five billion, one hundred eighty-eight million, two hundred fourteen thousand, nine hundred fifty-one".