457765445 has 4 divisors (see below), whose sum is σ = 549318540. Its totient is φ = 366212352.

The previous prime is 457765433. The next prime is 457765453. The reversal of 457765445 is 544567754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544567754 = 2 ⋅272283877.

It can be written as a sum of positive squares in 2 ways, for example, as 360012676 + 97752769 = 18974^2 + 9887^2 .

It is a cyclic number.

It is not a de Polignac number, because 457765445 - 2¹⁶ = 457699909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 457765445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45776540 + ... + 45776549.

It is an arithmetic number, because the mean of its divisors is an integer number (137329635).

Almost surely, 2^457765445 is an apocalyptic number.

It is an amenable number.

457765445 is a deficient number, since it is larger than the sum of its proper divisors (91553095).

457765445 is an equidigital number, since it uses as much as digits as its factorization.

457765445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91553094.

The product of its digits is 2352000, while the sum is 47.

The square root of 457765445 is about 21395.4538395426. The cubic root of 457765445 is about 770.6922683052.

The spelling of 457765445 in words is "four hundred fifty-seven million, seven hundred sixty-five thousand, four hundred forty-five".