457121043557 has 2 divisors, whose sum is σ = 457121043558. Its totient is φ = 457121043556.

The previous prime is 457121043479. The next prime is 457121043559. The reversal of 457121043557 is 755340121754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415810887556 + 41310156001 = 644834^2 + 203249^2 .

It is a cyclic number.

It is not a de Polignac number, because 457121043557 - 2¹⁰ = 457121042533 is a prime.

Together with 457121043559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457121043559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228560521778 + 228560521779.

It is an arithmetic number, because the mean of its divisors is an integer number (228560521779).

Almost surely, 2^457121043557 is an apocalyptic number.

It is an amenable number.

457121043557 is a deficient number, since it is larger than the sum of its proper divisors (1).

457121043557 is an equidigital number, since it uses as much as digits as its factorization.

457121043557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 457121043557 in words is "four hundred fifty-seven billion, one hundred twenty-one million, forty-three thousand, five hundred fifty-seven".