55170697553 has 4 divisors (see below), whose sum is σ = 55591848048. Its totient is φ = 54749547060.

The previous prime is 55170697523. The next prime is 55170697559. The reversal of 55170697553 is 35579607155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35579607155 = 5 ⋅7115921431.

It is a cyclic number.

It is not a de Polignac number, because 55170697553 - 2²⁰ = 55169648977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55170697495 and 55170697504.

It is not an unprimeable number, because it can be changed into a prime (55170697559) 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, 210575051 + ... + 210575312.

It is an arithmetic number, because the mean of its divisors is an integer number (13897962012).

Almost surely, 2^55170697553 is an apocalyptic number.

It is an amenable number.

55170697553 is a deficient number, since it is larger than the sum of its proper divisors (421150495).

55170697553 is a wasteful number, since it uses less digits than its factorization.

55170697553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421150494.

The product of its (nonzero) digits is 4961250, while the sum is 53.

The spelling of 55170697553 in words is "fifty-five billion, one hundred seventy million, six hundred ninety-seven thousand, five hundred fifty-three".