456145 has 4 divisors (see below), whose sum is σ = 547380. Its totient is φ = 364912.

The previous prime is 456119. The next prime is 456149. The reversal of 456145 is 541654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 358801 + 97344 = 599^2 + 312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-456145 is a prime.

It is a super-2 number, since 2×456145² = 416136522050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456149) 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, 45610 + ... + 45619.

It is an arithmetic number, because the mean of its divisors is an integer number (136845).

2⁴⁵⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

456145 is a deficient number, since it is larger than the sum of its proper divisors (91235).

456145 is an equidigital number, since it uses as much as digits as its factorization.

456145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91234.

The product of its digits is 2400, while the sum is 25.

The square root of 456145 is about 675.3850753459. The cubic root of 456145 is about 76.9781801332.

Adding to 456145 its reverse (541654), we get a palindrome (997799).

The spelling of 456145 in words is "four hundred fifty-six thousand, one hundred forty-five".