55170545819 has 4 divisors (see below), whose sum is σ = 55232745744. Its totient is φ = 55108345896.

The previous prime is 55170545789. The next prime is 55170545827. The reversal of 55170545819 is 91854507155.

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 55170545819 - 2²⁸ = 54902110363 is a prime.

It is a super-2 number, since 2×55170545819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55170545839) 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, 31098632 + ... + 31100405.

It is an arithmetic number, because the mean of its divisors is an integer number (13808186436).

Almost surely, 2^55170545819 is an apocalyptic number.

55170545819 is a deficient number, since it is larger than the sum of its proper divisors (62199925).

55170545819 is an equidigital number, since it uses as much as digits as its factorization.

55170545819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62199924.

The product of its (nonzero) digits is 1260000, while the sum is 50.

The spelling of 55170545819 in words is "fifty-five billion, one hundred seventy million, five hundred forty-five thousand, eight hundred nineteen".