457838521 has 8 divisors (see below), whose sum is σ = 523469120. Its totient is φ = 392264208.

The previous prime is 457838471. The next prime is 457838527. The reversal of 457838521 is 125838754.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 457838521 - 2¹⁵ = 457805753 is a prime.

It is a super-2 number, since 2×457838521² = 419232222622934882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457838527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5110 + ... + 30688.

It is an arithmetic number, because the mean of its divisors is an integer number (65433640).

Almost surely, 2^457838521 is an apocalyptic number.

It is an amenable number.

457838521 is a deficient number, since it is larger than the sum of its proper divisors (65630599).

457838521 is a wasteful number, since it uses less digits than its factorization.

457838521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28143.

The product of its digits is 268800, while the sum is 43.

The square root of 457838521 is about 21397.1615173602. The cubic root of 457838521 is about 770.7332762874.

The spelling of 457838521 in words is "four hundred fifty-seven million, eight hundred thirty-eight thousand, five hundred twenty-one".