2155000054251 has 8 divisors (see below), whose sum is σ = 3134545533504. Its totient is φ = 1306060638920.

The previous prime is 2155000054237. The next prime is 2155000054267. The reversal of 2155000054251 is 1524500005512.

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

It is a cyclic number.

It is not a de Polignac number, because 2155000054251 - 2⁵ = 2155000054219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155000054651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32651515941 + ... + 32651516006.

It is an arithmetic number, because the mean of its divisors is an integer number (391818191688).

Almost surely, 2^{2155000054251} is an apocalyptic number.

2155000054251 is a deficient number, since it is larger than the sum of its proper divisors (979545479253).

2155000054251 is a wasteful number, since it uses less digits than its factorization.

2155000054251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65303031961.

The product of its (nonzero) digits is 10000, while the sum is 30.

Adding to 2155000054251 its reverse (1524500005512), we get a palindrome (3679500059763).

The spelling of 2155000054251 in words is "two trillion, one hundred fifty-five billion, fifty-four thousand, two hundred fifty-one".