457307021 has 8 divisors (see below), whose sum is σ = 495468864. Its totient is φ = 420396480.

The previous prime is 457306981. The next prime is 457307023. The reversal of 457307021 is 120703754.

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 457307021 - 2⁶ = 457306957 is a prime.

It is a super-2 number, since 2×457307021² = 418259422911788882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457307023) 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, 312065 + ... + 313526.

It is an arithmetic number, because the mean of its divisors is an integer number (61933608).

Almost surely, 2^457307021 is an apocalyptic number.

It is an amenable number.

457307021 is a deficient number, since it is larger than the sum of its proper divisors (38161843).

457307021 is a wasteful number, since it uses less digits than its factorization.

457307021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625651.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 457307021 is about 21384.7380390782. The cubic root of 457307021 is about 770.4349153753.

The spelling of 457307021 in words is "four hundred fifty-seven million, three hundred seven thousand, twenty-one".