4253067721 has 8 divisors (see below), whose sum is σ = 4861102400. Its totient is φ = 3645146448.

The previous prime is 4253067697. The next prime is 4253067727. The reversal of 4253067721 is 1277603524.

It is a happy number.

4253067721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4253067721 - 2⁹ = 4253067209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4253067727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79255 + ... + 121603.

It is an arithmetic number, because the mean of its divisors is an integer number (607637800).

Almost surely, 2^4253067721 is an apocalyptic number.

It is an amenable number.

4253067721 is a deficient number, since it is larger than the sum of its proper divisors (608034679).

4253067721 is a wasteful number, since it uses less digits than its factorization.

4253067721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56703.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 4253067721 is about 65215.5481537953. The cubic root of 4253067721 is about 1620.1955412239.

The spelling of 4253067721 in words is "four billion, two hundred fifty-three million, sixty-seven thousand, seven hundred twenty-one".