457145985 has 16 divisors (see below), whose sum is σ = 769930560. Its totient is φ = 230978880.

The previous prime is 457145981. The next prime is 457146013. The reversal of 457145985 is 589541754.

It is a happy number.

It is not a de Polignac number, because 457145985 - 2² = 457145981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (457145981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 801726 + ... + 802295.

It is an arithmetic number, because the mean of its divisors is an integer number (48120660).

Almost surely, 2^457145985 is an apocalyptic number.

It is an amenable number.

457145985 is a deficient number, since it is larger than the sum of its proper divisors (312784575).

457145985 is a wasteful number, since it uses less digits than its factorization.

457145985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604048.

The product of its digits is 1008000, while the sum is 48.

The square root of 457145985 is about 21380.9724989300. The cubic root of 457145985 is about 770.3444711608.

The spelling of 457145985 in words is "four hundred fifty-seven million, one hundred forty-five thousand, nine hundred eighty-five".