245111321 has 16 divisors (see below), whose sum is σ = 319423104. Its totient is φ = 182525184.

The previous prime is 245111303. The next prime is 245111329. The reversal of 245111321 is 123111542.

It is a cyclic number.

It is not a de Polignac number, because 245111321 - 2⁶ = 245111257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245111293 and 245111302.

It is not an unprimeable number, because it can be changed into a prime (245111329) 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 15 ways as a sum of consecutive naturals, for example, 77675 + ... + 80768.

It is an arithmetic number, because the mean of its divisors is an integer number (19963944).

Almost surely, 2^245111321 is an apocalyptic number.

It is an amenable number.

245111321 is a deficient number, since it is larger than the sum of its proper divisors (74311783).

245111321 is a wasteful number, since it uses less digits than its factorization.

245111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158480.

The product of its digits is 240, while the sum is 20.

The square root of 245111321 is about 15656.0314575565. The cubic root of 245111321 is about 625.8272318702.

Adding to 245111321 its reverse (123111542), we get a palindrome (368222863).

The spelling of 245111321 in words is "two hundred forty-five million, one hundred eleven thousand, three hundred twenty-one".