457287321 has 4 divisors (see below), whose sum is σ = 609716432. Its totient is φ = 304858212.

The previous prime is 457287319. The next prime is 457287353. The reversal of 457287321 is 123782754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 457287321 - 2¹ = 457287319 is a prime.

It is a super-2 number, since 2×457287321² = 418223387894714082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 457287321.

It is not an unprimeable number, because it can be changed into a prime (457287361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76214551 + ... + 76214556.

It is an arithmetic number, because the mean of its divisors is an integer number (152429108).

Almost surely, 2^457287321 is an apocalyptic number.

It is an amenable number.

457287321 is a deficient number, since it is larger than the sum of its proper divisors (152429111).

457287321 is a wasteful number, since it uses less digits than its factorization.

457287321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152429110.

The product of its digits is 94080, while the sum is 39.

The square root of 457287321 is about 21384.2774252487. The cubic root of 457287321 is about 770.4238522127.

The spelling of 457287321 in words is "four hundred fifty-seven million, two hundred eighty-seven thousand, three hundred twenty-one".