4021172257 has 2 divisors, whose sum is σ = 4021172258. Its totient is φ = 4021172256.

The previous prime is 4021172251. The next prime is 4021172263. The reversal of 4021172257 is 7522711204.

It is a balanced prime because it is at equal distance from previous prime (4021172251) and next prime (4021172263).

It can be written as a sum of positive squares in only one way, i.e., 2375977536 + 1645194721 = 48744^2 + 40561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021172257 is a prime.

It is a super-3 number, since 3×4021172257³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (4021172251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010586128 + 2010586129.

It is an arithmetic number, because the mean of its divisors is an integer number (2010586129).

Almost surely, 2^4021172257 is an apocalyptic number.

It is an amenable number.

4021172257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021172257 is an equidigital number, since it uses as much as digits as its factorization.

4021172257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 4021172257 is about 63412.7136858217. The cubic root of 4021172257 is about 1590.1968635378.

The spelling of 4021172257 in words is "four billion, twenty-one million, one hundred seventy-two thousand, two hundred fifty-seven".