55506105510551 has 4 divisors (see below), whose sum is σ = 55520832525600. Its totient is φ = 55491378495504.

The previous prime is 55506105510487. The next prime is 55506105510587. The reversal of 55506105510551 is 15501550160555.

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

It is a cyclic number.

It is not a de Polignac number, because 55506105510551 - 2⁶ = 55506105510487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506105516551) 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, 7363501871 + ... + 7363509408.

It is an arithmetic number, because the mean of its divisors is an integer number (13880208131400).

Almost surely, 2^{55506105510551} is an apocalyptic number.

55506105510551 is a deficient number, since it is larger than the sum of its proper divisors (14727015049).

55506105510551 is a wasteful number, since it uses less digits than its factorization.

55506105510551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14727015048.

The product of its (nonzero) digits is 468750, while the sum is 44.

The spelling of 55506105510551 in words is "fifty-five trillion, five hundred six billion, one hundred five million, five hundred ten thousand, five hundred fifty-one".