245564439 has 16 divisors (see below), whose sum is σ = 350580960. Its totient is φ = 152345600.

The previous prime is 245564437. The next prime is 245564441. The reversal of 245564439 is 934465542.

It is an interprime number because it is at equal distance from previous prime (245564437) and next prime (245564441).

It is a cyclic number.

It is not a de Polignac number, because 245564439 - 2¹ = 245564437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245564439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245564437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22512 + ... + 31589.

It is an arithmetic number, because the mean of its divisors is an integer number (21911310).

Almost surely, 2^245564439 is an apocalyptic number.

245564439 is a deficient number, since it is larger than the sum of its proper divisors (105016521).

245564439 is a wasteful number, since it uses less digits than its factorization.

245564439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54210.

The product of its digits is 518400, while the sum is 42.

The square root of 245564439 is about 15670.4958121943. The cubic root of 245564439 is about 626.2126336564.

The spelling of 245564439 in words is "two hundred forty-five million, five hundred sixty-four thousand, four hundred thirty-nine".