457152021 has 12 divisors (see below), whose sum is σ = 660662080. Its totient is φ = 304615080.

The previous prime is 457152011. The next prime is 457152029. The reversal of 457152021 is 120251754.

457152021 is a `hidden beast` number, since 457 + 1 + 5 + 202 + 1 = 666.

It is not a de Polignac number, because 457152021 - 2⁹ = 457151509 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 (457152029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7956 + ... + 31266.

Almost surely, 2^457152021 is an apocalyptic number.

It is an amenable number.

457152021 is a deficient number, since it is larger than the sum of its proper divisors (203510059).

457152021 is a wasteful number, since it uses less digits than its factorization.

457152021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25496 (or 25493 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 457152021 is about 21381.1136520061. The cubic root of 457152021 is about 770.3478616012.

The spelling of 457152021 in words is "four hundred fifty-seven million, one hundred fifty-two thousand, twenty-one".