245323453 has 4 divisors (see below), whose sum is σ = 246107548. Its totient is φ = 244539360.

The previous prime is 245323439. The next prime is 245323457. The reversal of 245323453 is 354323542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354323542 = 2 ⋅177161771.

It can be written as a sum of positive squares in 2 ways, for example, as 12974404 + 232349049 = 3602^2 + 15243^2 .

It is a cyclic number.

It is not a de Polignac number, because 245323453 - 2¹³ = 245315261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245323457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391578 + ... + 392203.

It is an arithmetic number, because the mean of its divisors is an integer number (61526887).

Almost surely, 2^245323453 is an apocalyptic number.

It is an amenable number.

245323453 is a deficient number, since it is larger than the sum of its proper divisors (784095).

245323453 is an equidigital number, since it uses as much as digits as its factorization.

245323453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784094.

The product of its digits is 43200, while the sum is 31.

The square root of 245323453 is about 15662.8047616000. The cubic root of 245323453 is about 626.0077208845.

Adding to 245323453 its reverse (354323542), we get a palindrome (599646995).

The spelling of 245323453 in words is "two hundred forty-five million, three hundred twenty-three thousand, four hundred fifty-three".