2172407651 has 4 divisors (see below), whose sum is σ = 2173625112. Its totient is φ = 2171190192.

The previous prime is 2172407647. The next prime is 2172407669. The reversal of 2172407651 is 1567042712.

2172407651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2172407651 - 2² = 2172407647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2172407851) 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, 606050 + ... + 609623.

It is an arithmetic number, because the mean of its divisors is an integer number (543406278).

Almost surely, 2^2172407651 is an apocalyptic number.

2172407651 is a deficient number, since it is larger than the sum of its proper divisors (1217461).

2172407651 is a wasteful number, since it uses less digits than its factorization.

2172407651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217460.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 2172407651 is about 46609.0940804474. The cubic root of 2172407651 is about 1295.1312262482.

The spelling of 2172407651 in words is "two billion, one hundred seventy-two million, four hundred seven thousand, six hundred fifty-one".