457275457 has 2 divisors, whose sum is σ = 457275458. Its totient is φ = 457275456.

The previous prime is 457275437. The next prime is 457275461. The reversal of 457275457 is 754572754.

It is a Cunningham number, because it is equal to 21384²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457275456 + 1 = 21384^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 457275457 - 2¹⁵ = 457242689 is a prime.

It is not a weakly prime, because it can be changed into another prime (457275437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228637728 + 228637729.

It is an arithmetic number, because the mean of its divisors is an integer number (228637729).

Almost surely, 2^457275457 is an apocalyptic number.

It is an amenable number.

457275457 is a deficient number, since it is larger than the sum of its proper divisors (1).

457275457 is an equidigital number, since it uses as much as digits as its factorization.

457275457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1372000, while the sum is 46.

The square root of 457275457 is about 21384.0000233820. Note that the first 4 decimals coincide. The cubic root of 457275457 is about 770.4171894523.

The spelling of 457275457 in words is "four hundred fifty-seven million, two hundred seventy-five thousand, four hundred fifty-seven".