57888221 has 2 divisors, whose sum is σ = 57888222. Its totient is φ = 57888220.

The previous prime is 57888211. The next prime is 57888283. The reversal of 57888221 is 12288875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56460196 + 1428025 = 7514^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 57888221 - 2⁶ = 57888157 is a prime.

It is a super-2 number, since 2×57888221² = 6702092261089682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57888211) 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, 28944110 + 28944111.

It is an arithmetic number, because the mean of its divisors is an integer number (28944111).

Almost surely, 2^57888221 is an apocalyptic number.

It is an amenable number.

57888221 is a deficient number, since it is larger than the sum of its proper divisors (1).

57888221 is an equidigital number, since it uses as much as digits as its factorization.

57888221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 41.

The square root of 57888221 is about 7608.4309157671. The cubic root of 57888221 is about 386.8388359152.

The spelling of 57888221 in words is "fifty-seven million, eight hundred eighty-eight thousand, two hundred twenty-one".