245461 has 4 divisors (see below), whose sum is σ = 258400. Its totient is φ = 232524.

The previous prime is 245437. The next prime is 245471. The reversal of 245461 is 164542.

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 a de Polignac number, because none of the positive numbers 2^k-245461 is a prime.

It is a super-2 number, since 2×245461² = 120502205042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6441 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (64600).

2²⁴⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

245461 is a deficient number, since it is larger than the sum of its proper divisors (12939).

245461 is a wasteful number, since it uses less digits than its factorization.

245461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12938.

The product of its digits is 960, while the sum is 22.

The square root of 245461 is about 495.4402082996. The cubic root of 245461 is about 62.6124694884.

The spelling of 245461 in words is "two hundred forty-five thousand, four hundred sixty-one".