457477021 has 8 divisors (see below), whose sum is σ = 488087424. Its totient is φ = 427277760.

The previous prime is 457477019. The next prime is 457477049. The reversal of 457477021 is 120774754.

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

It is a cyclic number.

It is not a de Polignac number, because 457477021 - 2¹ = 457477019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457477051) 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, 100485 + ... + 104938.

It is an arithmetic number, because the mean of its divisors is an integer number (61010928).

Almost surely, 2^457477021 is an apocalyptic number.

It is an amenable number.

457477021 is a deficient number, since it is larger than the sum of its proper divisors (30610403).

457477021 is a wasteful number, since it uses less digits than its factorization.

457477021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205571.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 457477021 is about 21388.7124670935. The cubic root of 457477021 is about 770.5303710928.

The spelling of 457477021 in words is "four hundred fifty-seven million, four hundred seventy-seven thousand, twenty-one".