245497241 has 4 divisors (see below), whose sum is σ = 267815184. Its totient is φ = 223179300.

The previous prime is 245497237. The next prime is 245497243. The reversal of 245497241 is 142794542.

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 a cyclic number.

It is not a de Polignac number, because 245497241 - 2² = 245497237 is a prime.

It is a super-2 number, since 2×245497241² = 120537790677224162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245497195 and 245497204.

It is not an unprimeable number, because it can be changed into a prime (245497243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11158955 + ... + 11158976.

It is an arithmetic number, because the mean of its divisors is an integer number (66953796).

Almost surely, 2^245497241 is an apocalyptic number.

It is an amenable number.

245497241 is a deficient number, since it is larger than the sum of its proper divisors (22317943).

245497241 is a wasteful number, since it uses less digits than its factorization.

245497241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22317942.

The product of its digits is 80640, while the sum is 38.

The square root of 245497241 is about 15668.3515725171. The cubic root of 245497241 is about 626.1555080187.

The spelling of 245497241 in words is "two hundred forty-five million, four hundred ninety-seven thousand, two hundred forty-one".