2172633045 has 48 divisors (see below), whose sum is σ = 3902411520. Its totient is φ = 1030944640.

The previous prime is 2172633037. The next prime is 2172633059. The reversal of 2172633045 is 5403362712.

It is not a de Polignac number, because 2172633045 - 2³ = 2172633037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 2172632997 and 2172633015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72571 + ... + 98039.

It is an arithmetic number, because the mean of its divisors is an integer number (81300240).

Almost surely, 2^2172633045 is an apocalyptic number.

It is an amenable number.

2172633045 is a deficient number, since it is larger than the sum of its proper divisors (1729778475).

2172633045 is a wasteful number, since it uses less digits than its factorization.

2172633045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25546 (or 25535 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 2172633045 is about 46611.5119364305. The cubic root of 2172633045 is about 1295.1760159868.

Adding to 2172633045 its reverse (5403362712), we get a palindrome (7575995757).

The spelling of 2172633045 in words is "two billion, one hundred seventy-two million, six hundred thirty-three thousand, forty-five".