245595513 has 4 divisors (see below), whose sum is σ = 327460688. Its totient is φ = 163730340.

The previous prime is 245595491. The next prime is 245595527. The reversal of 245595513 is 315595542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 245595513 - 2¹⁴ = 245579129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245595533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40932583 + ... + 40932588.

It is an arithmetic number, because the mean of its divisors is an integer number (81865172).

Almost surely, 2^245595513 is an apocalyptic number.

It is an amenable number.

245595513 is a deficient number, since it is larger than the sum of its proper divisors (81865175).

245595513 is an equidigital number, since it uses as much as digits as its factorization.

245595513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81865174.

The product of its digits is 135000, while the sum is 39.

The square root of 245595513 is about 15671.4872619034. The cubic root of 245595513 is about 626.2390464258.

The spelling of 245595513 in words is "two hundred forty-five million, five hundred ninety-five thousand, five hundred thirteen".