245901 has 4 divisors (see below), whose sum is σ = 327872. Its totient is φ = 163932.

The previous prime is 245899. The next prime is 245909. The reversal of 245901 is 109542.

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 245901 - 2¹ = 245899 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245909) 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, 40981 + ... + 40986.

It is an arithmetic number, because the mean of its divisors is an integer number (81968).

2²⁴⁵⁹⁰¹ is an apocalyptic number.

It is an amenable number.

245901 is a deficient number, since it is larger than the sum of its proper divisors (81971).

245901 is an equidigital number, since it uses as much as digits as its factorization.

245901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81970.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 245901 is about 495.8840590299. The cubic root of 245901 is about 62.6498590557.

The spelling of 245901 in words is "two hundred forty-five thousand, nine hundred one".