457185445 has 4 divisors (see below), whose sum is σ = 548622540. Its totient is φ = 365748352.

The previous prime is 457185409. The next prime is 457185451. The reversal of 457185445 is 544581754.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61732449 + 395452996 = 7857^2 + 19886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-457185445 is a prime.

It is a super-2 number, since 2×457185445² = 418037062239696050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45718540 + ... + 45718549.

It is an arithmetic number, because the mean of its divisors is an integer number (137155635).

Almost surely, 2^457185445 is an apocalyptic number.

It is an amenable number.

457185445 is a deficient number, since it is larger than the sum of its proper divisors (91437095).

457185445 is an equidigital number, since it uses as much as digits as its factorization.

457185445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91437094.

The product of its digits is 448000, while the sum is 43.

The square root of 457185445 is about 21381.8952621137. The cubic root of 457185445 is about 770.3666354287.

The spelling of 457185445 in words is "four hundred fifty-seven million, one hundred eighty-five thousand, four hundred forty-five".