55020155567 has 4 divisors (see below), whose sum is σ = 59252475240. Its totient is φ = 50787835896.

The previous prime is 55020155549. The next prime is 55020155569. The reversal of 55020155567 is 76555102055.

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 55020155567 - 2¹⁴ = 55020139183 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 (55020155569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116159817 + ... + 2116159842.

It is an arithmetic number, because the mean of its divisors is an integer number (14813118810).

Almost surely, 2^55020155567 is an apocalyptic number.

55020155567 is a deficient number, since it is larger than the sum of its proper divisors (4232319673).

55020155567 is a wasteful number, since it uses less digits than its factorization.

55020155567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232319672.

The product of its (nonzero) digits is 262500, while the sum is 41.

The spelling of 55020155567 in words is "fifty-five billion, twenty million, one hundred fifty-five thousand, five hundred sixty-seven".