245555505 has 24 divisors (see below), whose sum is σ = 458371368. Its totient is φ = 120888576.

The previous prime is 245555467. The next prime is 245555507. The reversal of 245555505 is 505555542.

It can be written as a sum of positive squares in 4 ways, for example, as 4809249 + 240746256 = 2193^2 + 15516^2 .

It is not a de Polignac number, because 245555505 - 2⁷ = 245555377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245555505.

It is not an unprimeable number, because it can be changed into a prime (245555507) 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 23 ways as a sum of consecutive naturals, for example, 209292 + ... + 210461.

It is an arithmetic number, because the mean of its divisors is an integer number (19098807).

Almost surely, 2^245555505 is an apocalyptic number.

It is an amenable number.

245555505 is a deficient number, since it is larger than the sum of its proper divisors (212815863).

245555505 is a wasteful number, since it uses less digits than its factorization.

245555505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419777 (or 419774 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 36.

The square root of 245555505 is about 15670.2107516140. The cubic root of 245555505 is about 626.2050393816.

The spelling of 245555505 in words is "two hundred forty-five million, five hundred fifty-five thousand, five hundred five".