55500605551 has 8 divisors (see below), whose sum is σ = 60131983824. Its totient is φ = 51021075840.

The previous prime is 55500605539. The next prime is 55500605651. The reversal of 55500605551 is 15550600555.

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 55500605551 - 2¹³ = 55500597359 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 55500605551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500605351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37961380 + ... + 37962841.

It is an arithmetic number, because the mean of its divisors is an integer number (7516497978).

Almost surely, 2^55500605551 is an apocalyptic number.

55500605551 is a deficient number, since it is larger than the sum of its proper divisors (4631378273).

55500605551 is a wasteful number, since it uses less digits than its factorization.

55500605551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75924281.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 55500605551 in words is "fifty-five billion, five hundred million, six hundred five thousand, five hundred fifty-one".