451145 has 8 divisors (see below), whose sum is σ = 565056. Its totient is φ = 345136.

The previous prime is 451109. The next prime is 451159. The reversal of 451145 is 541154.

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 451145 - 2¹⁴ = 434761 is a prime.

It is a super-2 number, since 2×451145² = 407063622050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1847 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (70632).

2⁴⁵¹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

451145 is a deficient number, since it is larger than the sum of its proper divisors (113911).

451145 is a wasteful number, since it uses less digits than its factorization.

451145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951.

The product of its digits is 400, while the sum is 20.

The square root of 451145 is about 671.6732836729. The cubic root of 451145 is about 76.6958825849.

Adding to 451145 its reverse (541154), we get a palindrome (992299).

Subtracting 451145 from its reverse (541154), we obtain a palindrome (90009).

The spelling of 451145 in words is "four hundred fifty-one thousand, one hundred forty-five".