45245 has 4 divisors (see below), whose sum is σ = 54300. Its totient is φ = 36192.

The previous prime is 45233. The next prime is 45247. The reversal of 45245 is 54254.

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: 54254 = 2 ⋅27127.

It can be written as a sum of positive squares in 2 ways, for example, as 27556 + 17689 = 166^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 45245 - 2⁶ = 45181 is a prime.

It is a super-2 number, since 2×45245² = 4094220050, which contains 22 as substring.

It is a plaindrome in base 12 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45247) 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, 4520 + ... + 4529.

It is an arithmetic number, because the mean of its divisors is an integer number (13575).

2⁴⁵²⁴⁵ is an apocalyptic number.

It is an amenable number.

45245 is a deficient number, since it is larger than the sum of its proper divisors (9055).

45245 is an equidigital number, since it uses as much as digits as its factorization.

45245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9054.

The product of its digits is 800, while the sum is 20.

The square root of 45245 is about 212.7087210248. The cubic root of 45245 is about 35.6333672764.

Adding to 45245 its reverse (54254), we get a palindrome (99499).

Subtracting 45245 from its reverse (54254), we obtain a palindrome (9009).

It can be divided in two parts, 45 and 245, that multiplied together give a square (11025 = 105²).

The spelling of 45245 in words is "forty-five thousand, two hundred forty-five".