452639745 has 28 divisors (see below), whose sum is σ = 814385556. Its totient is φ = 241405920.

The previous prime is 452639731. The next prime is 452639771. The reversal of 452639745 is 547936254.

452639745 is a `hidden beast` number, since 4 + 5 + 2 + 639 + 7 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 316590849 + 136048896 = 17793^2 + 11664^2 .

It is not a de Polignac number, because 452639745 - 2⁴ = 452639729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 452639745.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 58446 + ... + 65735.

Almost surely, 2^452639745 is an apocalyptic number.

452639745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

452639745 is a deficient number, since it is larger than the sum of its proper divisors (361745811).

452639745 is an equidigital number, since it uses as much as digits as its factorization.

452639745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124204 (or 124189 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 452639745 is about 21275.3318423004. The cubic root of 452639745 is about 767.8049278728.

The spelling of 452639745 in words is "four hundred fifty-two million, six hundred thirty-nine thousand, seven hundred forty-five".