245534165 has 4 divisors (see below), whose sum is σ = 294641004. Its totient is φ = 196427328.

The previous prime is 245534153. The next prime is 245534209. The reversal of 245534165 is 561435542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561435542 = 2 ⋅280717771.

It can be written as a sum of positive squares in 2 ways, for example, as 79459396 + 166074769 = 8914^2 + 12887^2 .

It is a cyclic number.

It is not a de Polignac number, because 245534165 - 2¹² = 245530069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24553412 + ... + 24553421.

It is an arithmetic number, because the mean of its divisors is an integer number (73660251).

Almost surely, 2^245534165 is an apocalyptic number.

It is an amenable number.

245534165 is a deficient number, since it is larger than the sum of its proper divisors (49106839).

245534165 is an equidigital number, since it uses as much as digits as its factorization.

245534165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49106838.

The product of its digits is 72000, while the sum is 35.

The square root of 245534165 is about 15669.5298270242. The cubic root of 245534165 is about 626.1868987408.

The spelling of 245534165 in words is "two hundred forty-five million, five hundred thirty-four thousand, one hundred sixty-five".