457567421 has 4 divisors (see below), whose sum is σ = 468727644. Its totient is φ = 446407200.

The previous prime is 457567387. The next prime is 457567441. The reversal of 457567421 is 124765754.

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 168091225 + 289476196 = 12965^2 + 17014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-457567421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 11160181 = 457567421 / (4 + 5 + 7 + 5 + 6 + 7 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457567441) 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, 5580050 + ... + 5580131.

It is an arithmetic number, because the mean of its divisors is an integer number (117181911).

Almost surely, 2^457567421 is an apocalyptic number.

457567421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

457567421 is a deficient number, since it is larger than the sum of its proper divisors (11160223).

457567421 is a wasteful number, since it uses less digits than its factorization.

457567421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11160222.

The product of its digits is 235200, while the sum is 41.

The square root of 457567421 is about 21390.8256268897. The cubic root of 457567421 is about 770.5811214437.

The spelling of 457567421 in words is "four hundred fifty-seven million, five hundred sixty-seven thousand, four hundred twenty-one".