245405323 has 4 divisors (see below), whose sum is σ = 248861808. Its totient is φ = 241948840.

The previous prime is 245405191. The next prime is 245405327. The reversal of 245405323 is 323504542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245405323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245405291 and 245405300.

It is not an unprimeable number, because it can be changed into a prime (245405327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728136 + ... + 1728277.

It is an arithmetic number, because the mean of its divisors is an integer number (62215452).

Almost surely, 2^245405323 is an apocalyptic number.

245405323 is a deficient number, since it is larger than the sum of its proper divisors (3456485).

245405323 is an equidigital number, since it uses as much as digits as its factorization.

245405323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456484.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 245405323 is about 15665.4180601732. The cubic root of 245405323 is about 626.0773507974.

Adding to 245405323 its reverse (323504542), we get a palindrome (568909865).

The spelling of 245405323 in words is "two hundred forty-five million, four hundred five thousand, three hundred twenty-three".