4221451257 has 16 divisors (see below), whose sum is σ = 6062788608. Its totient is φ = 2605101840.

The previous prime is 4221451253. The next prime is 4221451279. The reversal of 4221451257 is 7521541224.

It is not a de Polignac number, because 4221451257 - 2² = 4221451253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221451253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984643 + ... + 988920.

It is an arithmetic number, because the mean of its divisors is an integer number (378924288).

Almost surely, 2^4221451257 is an apocalyptic number.

It is an amenable number.

4221451257 is a deficient number, since it is larger than the sum of its proper divisors (1841337351).

4221451257 is a wasteful number, since it uses less digits than its factorization.

4221451257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973620.

The product of its digits is 22400, while the sum is 33.

The square root of 4221451257 is about 64972.6962423448. The cubic root of 4221451257 is about 1616.1708139754.

The spelling of 4221451257 in words is "four billion, two hundred twenty-one million, four hundred fifty-one thousand, two hundred fifty-seven".