451045345 has 4 divisors (see below), whose sum is σ = 541254420. Its totient is φ = 360836272.

The previous prime is 451045337. The next prime is 451045349. The reversal of 451045345 is 543540154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543540154 = 2 ⋅271770077.

It can be written as a sum of positive squares in 2 ways, for example, as 254849296 + 196196049 = 15964^2 + 14007^2 .

It is a cyclic number.

It is not a de Polignac number, because 451045345 - 2³ = 451045337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (451045349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45104530 + ... + 45104539.

It is an arithmetic number, because the mean of its divisors is an integer number (135313605).

Almost surely, 2^451045345 is an apocalyptic number.

It is an amenable number.

451045345 is a deficient number, since it is larger than the sum of its proper divisors (90209075).

451045345 is an equidigital number, since it uses as much as digits as its factorization.

451045345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90209074.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 451045345 is about 21237.8281610903. The cubic root of 451045345 is about 766.9023496159.

Adding to 451045345 its reverse (543540154), we get a palindrome (994585499).

The spelling of 451045345 in words is "four hundred fifty-one million, forty-five thousand, three hundred forty-five".