457501621 has 2 divisors, whose sum is σ = 457501622. Its totient is φ = 457501620.

The previous prime is 457501601. The next prime is 457501643. The reversal of 457501621 is 126105754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457360996 + 140625 = 21386^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 457501621 - 2¹⁵ = 457468853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457501601) 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, 228750810 + 228750811.

It is an arithmetic number, because the mean of its divisors is an integer number (228750811).

Almost surely, 2^457501621 is an apocalyptic number.

It is an amenable number.

457501621 is a deficient number, since it is larger than the sum of its proper divisors (1).

457501621 is an equidigital number, since it uses as much as digits as its factorization.

457501621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 457501621 is about 21389.2875290413. The cubic root of 457501621 is about 770.5441821380.

The spelling of 457501621 in words is "four hundred fifty-seven million, five hundred one thousand, six hundred twenty-one".