457021507 has 2 divisors, whose sum is σ = 457021508. Its totient is φ = 457021506.

The previous prime is 457021463. The next prime is 457021517. The reversal of 457021507 is 705120754.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 457021507 - 2⁷ = 457021379 is a prime.

It is not a weakly prime, because it can be changed into another prime (457021517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228510753 + 228510754.

It is an arithmetic number, because the mean of its divisors is an integer number (228510754).

Almost surely, 2^457021507 is an apocalyptic number.

457021507 is a deficient number, since it is larger than the sum of its proper divisors (1).

457021507 is an equidigital number, since it uses as much as digits as its factorization.

457021507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 457021507 is about 21378.0613480269. The cubic root of 457021507 is about 770.2745448155.

The spelling of 457021507 in words is "four hundred fifty-seven million, twenty-one thousand, five hundred seven".