457102021 has 2 divisors, whose sum is σ = 457102022. Its totient is φ = 457102020.

The previous prime is 457101947. The next prime is 457102027. The reversal of 457102021 is 120201754.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452200225 + 4901796 = 21265^2 + 2214^2 .

It is a cyclic number.

It is not a de Polignac number, because 457102021 - 2⁷ = 457101893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 457101983 and 457102001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457102027) 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, 228551010 + 228551011.

It is an arithmetic number, because the mean of its divisors is an integer number (228551011).

Almost surely, 2^457102021 is an apocalyptic number.

It is an amenable number.

457102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

457102021 is an equidigital number, since it uses as much as digits as its factorization.

457102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 457102021 is about 21379.9443638191. The cubic root of 457102021 is about 770.3197755411.

Adding to 457102021 its reverse (120201754), we get a palindrome (577303775).

The spelling of 457102021 in words is "four hundred fifty-seven million, one hundred two thousand, twenty-one".