245603121 has 4 divisors (see below), whose sum is σ = 327470832. Its totient is φ = 163735412.

The previous prime is 245603119. The next prime is 245603159. The reversal of 245603121 is 121306542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245603121 - 2¹ = 245603119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245603091 and 245603100.

It is not an unprimeable number, because it can be changed into a prime (245603221) 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, 40933851 + ... + 40933856.

It is an arithmetic number, because the mean of its divisors is an integer number (81867708).

Almost surely, 2^245603121 is an apocalyptic number.

It is an amenable number.

245603121 is a deficient number, since it is larger than the sum of its proper divisors (81867711).

245603121 is an equidigital number, since it uses as much as digits as its factorization.

245603121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81867710.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 245603121 is about 15671.7299938456. The cubic root of 245603121 is about 626.2455128543.

Adding to 245603121 its reverse (121306542), we get a palindrome (366909663).

The spelling of 245603121 in words is "two hundred forty-five million, six hundred three thousand, one hundred twenty-one".