2175125451 has 4 divisors (see below), whose sum is σ = 2900167272. Its totient is φ = 1450083632.

The previous prime is 2175125443. The next prime is 2175125489. The reversal of 2175125451 is 1545215712.

2175125451 is digitally balanced in base 2 and base 4, because in such bases 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 2175125451 - 2³ = 2175125443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2175125951) 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, 362520906 + ... + 362520911.

It is an arithmetic number, because the mean of its divisors is an integer number (725041818).

Almost surely, 2^2175125451 is an apocalyptic number.

2175125451 is a deficient number, since it is larger than the sum of its proper divisors (725041821).

2175125451 is an equidigital number, since it uses as much as digits as its factorization.

2175125451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725041820.

The product of its digits is 14000, while the sum is 33.

The square root of 2175125451 is about 46638.2402219466. The cubic root of 2175125451 is about 1295.6710943525.

The spelling of 2175125451 in words is "two billion, one hundred seventy-five million, one hundred twenty-five thousand, four hundred fifty-one".