245502513 has 12 divisors (see below), whose sum is σ = 354975348. Its totient is φ = 163501920.

The previous prime is 245502503. The next prime is 245502563. The reversal of 245502513 is 315205542.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 93547584 + 151954929 = 9672^2 + 12327^2 .

It is not a de Polignac number, because 245502513 - 2⁴ = 245502497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245502503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4170 + ... + 22547.

It is an arithmetic number, because the mean of its divisors is an integer number (29581279).

Almost surely, 2^245502513 is an apocalyptic number.

It is an amenable number.

245502513 is a deficient number, since it is larger than the sum of its proper divisors (109472835).

245502513 is a wasteful number, since it uses less digits than its factorization.

245502513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27744 (or 27741 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 245502513 is about 15668.5198088396. The cubic root of 245502513 is about 626.1599901712.

The spelling of 245502513 in words is "two hundred forty-five million, five hundred two thousand, five hundred thirteen".