245441257 has 16 divisors (see below), whose sum is σ = 274924800. Its totient is φ = 217907712.

The previous prime is 245441243. The next prime is 245441267. The reversal of 245441257 is 752144542.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245441257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245441267) 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, 24244 + ... + 32842.

It is an arithmetic number, because the mean of its divisors is an integer number (17182800).

Almost surely, 2^245441257 is an apocalyptic number.

It is an amenable number.

245441257 is a deficient number, since it is larger than the sum of its proper divisors (29483543).

245441257 is a wasteful number, since it uses less digits than its factorization.

245441257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712.

The product of its digits is 44800, while the sum is 34.

The square root of 245441257 is about 15666.5649393860. The cubic root of 245441257 is about 626.1079075449.

Adding to 245441257 its reverse (752144542), we get a palindrome (997585799).

The spelling of 245441257 in words is "two hundred forty-five million, four hundred forty-one thousand, two hundred fifty-seven".