2170422451 has 4 divisors (see below), whose sum is σ = 2211373872. Its totient is φ = 2129471032.

The previous prime is 2170422427. The next prime is 2170422461. The reversal of 2170422451 is 1542240712.

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 2170422451 - 2⁷ = 2170422323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170422461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20475631 + ... + 20475736.

It is an arithmetic number, because the mean of its divisors is an integer number (552843468).

Almost surely, 2^2170422451 is an apocalyptic number.

2170422451 is a deficient number, since it is larger than the sum of its proper divisors (40951421).

2170422451 is an equidigital number, since it uses as much as digits as its factorization.

2170422451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40951420.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2170422451 is about 46587.7929397820. The cubic root of 2170422451 is about 1294.7365983364.

The spelling of 2170422451 in words is "two billion, one hundred seventy million, four hundred twenty-two thousand, four hundred fifty-one".