245055389 has 4 divisors (see below), whose sum is σ = 245102940. Its totient is φ = 245007840.

The previous prime is 245055347. The next prime is 245055397. The reversal of 245055389 is 983550542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119727364 + 125328025 = 10942^2 + 11195^2 .

It is a cyclic number.

It is not a de Polignac number, because 245055389 - 2¹⁶ = 244989853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245052389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14954 + ... + 26715.

It is an arithmetic number, because the mean of its divisors is an integer number (61275735).

Almost surely, 2^245055389 is an apocalyptic number.

It is an amenable number.

245055389 is a deficient number, since it is larger than the sum of its proper divisors (47551).

245055389 is an equidigital number, since it uses as much as digits as its factorization.

245055389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47550.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 245055389 is about 15654.2450792109. The cubic root of 245055389 is about 625.7796257030.

The spelling of 245055389 in words is "two hundred forty-five million, fifty-five thousand, three hundred eighty-nine".