245297385 has 24 divisors (see below), whose sum is σ = 431533440. Its totient is φ = 128871072.

The previous prime is 245297357. The next prime is 245297419. The reversal of 245297385 is 583792542.

245297385 is a `hidden beast` number, since 245 + 29 + 7 + 385 = 666.

It is not a de Polignac number, because 245297385 - 2⁷ = 245297257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 245297385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37665 + ... + 43694.

It is an arithmetic number, because the mean of its divisors is an integer number (17980560).

Almost surely, 2^245297385 is an apocalyptic number.

It is an amenable number.

245297385 is a deficient number, since it is larger than the sum of its proper divisors (186236055).

245297385 is a wasteful number, since it uses less digits than its factorization.

245297385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81437 (or 81434 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 245297385 is about 15661.9725769138. The cubic root of 245297385 is about 625.9855469653.

The spelling of 245297385 in words is "two hundred forty-five million, two hundred ninety-seven thousand, three hundred eighty-five".