55620155617 has 8 divisors (see below), whose sum is σ = 59942465856. Its totient is φ = 51304107792.

The previous prime is 55620155611. The next prime is 55620155627. The reversal of 55620155617 is 71655102655.

55620155617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55620155617 - 2⁷ = 55620155489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55620155611) 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, 1547143 + ... + 1582684.

It is an arithmetic number, because the mean of its divisors is an integer number (7492808232).

Almost surely, 2^55620155617 is an apocalyptic number.

It is an amenable number.

55620155617 is a deficient number, since it is larger than the sum of its proper divisors (4322310239).

55620155617 is a wasteful number, since it uses less digits than its factorization.

55620155617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131207.

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 55620155617 in words is "fifty-five billion, six hundred twenty million, one hundred fifty-five thousand, six hundred seventeen".