245432321 has 4 divisors (see below), whose sum is σ = 245482944. Its totient is φ = 245381700.

The previous prime is 245432309. The next prime is 245432339. The reversal of 245432321 is 123234542.

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 245432321 - 2¹⁰ = 245431297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245432021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17165 + ... + 28026.

It is an arithmetic number, because the mean of its divisors is an integer number (61370736).

It is a Proth number, since it is equal to 3745 ⋅ 2¹⁶ + 1 and 3745 < 2¹⁶.

Almost surely, 2^245432321 is an apocalyptic number.

It is an amenable number.

245432321 is a deficient number, since it is larger than the sum of its proper divisors (50623).

245432321 is an equidigital number, since it uses as much as digits as its factorization.

245432321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50622.

The product of its digits is 5760, while the sum is 26.

The square root of 245432321 is about 15666.2797434490. The cubic root of 245432321 is about 626.1003090287.

Adding to 245432321 its reverse (123234542), we get a palindrome (368666863).

It can be divided in two parts, 24 and 5432321, that added together give a palindrome (5432345).

The spelling of 245432321 in words is "two hundred forty-five million, four hundred thirty-two thousand, three hundred twenty-one".