245413521 has 12 divisors (see below), whose sum is σ = 355630080. Its totient is φ = 163081080.

The previous prime is 245413501. The next prime is 245413529. The reversal of 245413521 is 125314542.

245413521 is a `hidden beast` number, since 245 + 413 + 5 + 2 + 1 = 666.

It is not a de Polignac number, because 245413521 - 2⁷ = 245413393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245413529) 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 11 ways as a sum of consecutive naturals, for example, 41041 + ... + 46638.

It is an arithmetic number, because the mean of its divisors is an integer number (29635840).

Almost surely, 2^245413521 is an apocalyptic number.

It is an amenable number.

245413521 is a deficient number, since it is larger than the sum of its proper divisors (110216559).

245413521 is a wasteful number, since it uses less digits than its factorization.

245413521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87996 (or 87993 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 245413521 is about 15665.6797171396. The cubic root of 245413521 is about 626.0843222910.

The spelling of 245413521 in words is "two hundred forty-five million, four hundred thirteen thousand, five hundred twenty-one".