245165601 has 4 divisors (see below), whose sum is σ = 326887472. Its totient is φ = 163443732.

The previous prime is 245165597. The next prime is 245165617. The reversal of 245165601 is 106561542.

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 245165601 - 2² = 245165597 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 (245165621) 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, 40860931 + ... + 40860936.

It is an arithmetic number, because the mean of its divisors is an integer number (81721868).

Almost surely, 2^245165601 is an apocalyptic number.

It is an amenable number.

245165601 is a deficient number, since it is larger than the sum of its proper divisors (81721871).

245165601 is an equidigital number, since it uses as much as digits as its factorization.

245165601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81721870.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 245165601 is about 15657.7648788069. The cubic root of 245165601 is about 625.8734250240.

The spelling of 245165601 in words is "two hundred forty-five million, one hundred sixty-five thousand, six hundred one".