2172671533 has 4 divisors (see below), whose sum is σ = 2173217760. Its totient is φ = 2172125308.

The previous prime is 2172671513. The next prime is 2172671537. The reversal of 2172671533 is 3351762712.

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 2172671533 - 2²¹ = 2170574381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2172671492 and 2172671501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172671537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267103 + ... + 275116.

It is an arithmetic number, because the mean of its divisors is an integer number (543304440).

Almost surely, 2^2172671533 is an apocalyptic number.

It is an amenable number.

2172671533 is a deficient number, since it is larger than the sum of its proper divisors (546227).

2172671533 is an equidigital number, since it uses as much as digits as its factorization.

2172671533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546226.

The product of its digits is 52920, while the sum is 37.

The square root of 2172671533 is about 46611.9247939838. The cubic root of 2172671533 is about 1295.1836639174.

The spelling of 2172671533 in words is "two billion, one hundred seventy-two million, six hundred seventy-one thousand, five hundred thirty-three".