4255570721 has 4 divisors (see below), whose sum is σ = 4257851952. Its totient is φ = 4253289492.

The previous prime is 4255570661. The next prime is 4255570757. The reversal of 4255570721 is 1270755524.

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 4255570721 - 2¹⁰ = 4255569697 is a prime.

It is a super-2 number, since 2×4255570721² = 36219764322864919682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4255570321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137815 + ... + 1141548.

It is an arithmetic number, because the mean of its divisors is an integer number (1064462988).

Almost surely, 2^4255570721 is an apocalyptic number.

It is an amenable number.

4255570721 is a deficient number, since it is larger than the sum of its proper divisors (2281231).

4255570721 is a wasteful number, since it uses less digits than its factorization.

4255570721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281230.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 4255570721 is about 65234.7355402013. The cubic root of 4255570721 is about 1620.5133160960.

The spelling of 4255570721 in words is "four billion, two hundred fifty-five million, five hundred seventy thousand, seven hundred twenty-one".