55051611156551 has 4 divisors (see below), whose sum is σ = 55051697280600. Its totient is φ = 55051525032504.

The previous prime is 55051611156469. The next prime is 55051611156637. The reversal of 55051611156551 is 15565111615055.

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-55051611156551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55051611156496 and 55051611156505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55051611155551) 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, 42095981 + ... + 43384038.

It is an arithmetic number, because the mean of its divisors is an integer number (13762924320150).

Almost surely, 2^{55051611156551} is an apocalyptic number.

55051611156551 is a deficient number, since it is larger than the sum of its proper divisors (86124049).

55051611156551 is an equidigital number, since it uses as much as digits as its factorization.

55051611156551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86124048.

The product of its (nonzero) digits is 562500, while the sum is 47.

The spelling of 55051611156551 in words is "fifty-five trillion, fifty-one billion, six hundred eleven million, one hundred fifty-six thousand, five hundred fifty-one".