245240415 has 24 divisors (see below), whose sum is σ = 485810208. Its totient is φ = 112109760.

The previous prime is 245240389. The next prime is 245240449. The reversal of 245240415 is 514042542.

245240415 is a `hidden beast` number, since 2 + 4 + 5 + 240 + 415 = 666.

It is not a de Polignac number, because 245240415 - 2⁵ = 245240383 is a prime.

It is a super-2 number, since 2×245240415² = 120285722298744450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388956 + ... + 389585.

It is an arithmetic number, because the mean of its divisors is an integer number (20242092).

Almost surely, 2^245240415 is an apocalyptic number.

245240415 is a deficient number, since it is larger than the sum of its proper divisors (240569793).

245240415 is a wasteful number, since it uses less digits than its factorization.

245240415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778559 (or 778556 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 245240415 is about 15660.1537348776. The cubic root of 245240415 is about 625.9370817689.

Adding to 245240415 its reverse (514042542), we get a palindrome (759282957).

The spelling of 245240415 in words is "two hundred forty-five million, two hundred forty thousand, four hundred fifteen".