245545443 has 48 divisors (see below), whose sum is σ = 421031520. Its totient is φ = 135936000.

The previous prime is 245545439. The next prime is 245545463. The reversal of 245545443 is 344545542.

It is not a de Polignac number, because 245545443 - 2² = 245545439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245545398 and 245545407.

It is not an unprimeable number, because it can be changed into a prime (245545403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129043 + ... + 130931.

It is an arithmetic number, because the mean of its divisors is an integer number (8771490).

Almost surely, 2^245545443 is an apocalyptic number.

245545443 is a deficient number, since it is larger than the sum of its proper divisors (175486077).

245545443 is a wasteful number, since it uses less digits than its factorization.

245545443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 2017 counting only the distinct ones).

The product of its digits is 192000, while the sum is 36.

The square root of 245545443 is about 15669.8896932940. The cubic root of 245545443 is about 626.1964860389.

Subtracting 245545443 from its reverse (344545542), we obtain a palindrome (99000099).

The spelling of 245545443 in words is "two hundred forty-five million, five hundred forty-five thousand, four hundred forty-three".