2155176803 has 4 divisors (see below), whose sum is σ = 2320959648. Its totient is φ = 1989393960.

The previous prime is 2155176799. The next prime is 2155176827. The reversal of 2155176803 is 3086715512.

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 2155176803 - 2² = 2155176799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155176893) 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, 82891403 + ... + 82891428.

It is an arithmetic number, because the mean of its divisors is an integer number (580239912).

Almost surely, 2^2155176803 is an apocalyptic number.

2155176803 is a deficient number, since it is larger than the sum of its proper divisors (165782845).

2155176803 is a wasteful number, since it uses less digits than its factorization.

2155176803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165782844.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 2155176803 is about 46423.8818174439. The cubic root of 2155176803 is about 1291.6979430031.

The spelling of 2155176803 in words is "two billion, one hundred fifty-five million, one hundred seventy-six thousand, eight hundred three".