4254423521 has 4 divisors (see below), whose sum is σ = 4261297200. Its totient is φ = 4247549844.

The previous prime is 4254423517. The next prime is 4254423637. The reversal of 4254423521 is 1253244524.

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 4254423521 - 2² = 4254423517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4254453521) 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, 3435911 + ... + 3437148.

It is an arithmetic number, because the mean of its divisors is an integer number (1065324300).

Almost surely, 2^4254423521 is an apocalyptic number.

It is an amenable number.

4254423521 is a deficient number, since it is larger than the sum of its proper divisors (6873679).

4254423521 is an equidigital number, since it uses as much as digits as its factorization.

4254423521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873678.

The product of its digits is 38400, while the sum is 32.

The square root of 4254423521 is about 65225.9420859523. The cubic root of 4254423521 is about 1620.3676858092.

The spelling of 4254423521 in words is "four billion, two hundred fifty-four million, four hundred twenty-three thousand, five hundred twenty-one".