2175654161 has 4 divisors (see below), whose sum is σ = 2176643952. Its totient is φ = 2174664372.

The previous prime is 2175654149. The next prime is 2175654163. The reversal of 2175654161 is 1614565712.

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.

It is a cyclic number.

It is not a de Polignac number, because 2175654161 - 2²⁶ = 2108545297 is a prime.

It is a super-2 number, since 2×2175654161² = 9466942056553227842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2175654163) 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, 491591 + ... + 495996.

It is an arithmetic number, because the mean of its divisors is an integer number (544160988).

Almost surely, 2^2175654161 is an apocalyptic number.

It is an amenable number.

2175654161 is a deficient number, since it is larger than the sum of its proper divisors (989791).

2175654161 is an equidigital number, since it uses as much as digits as its factorization.

2175654161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989790.

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

The square root of 2175654161 is about 46643.9080802627. The cubic root of 2175654161 is about 1295.7760658868.

The spelling of 2175654161 in words is "two billion, one hundred seventy-five million, six hundred fifty-four thousand, one hundred sixty-one".