245481 has 8 divisors (see below), whose sum is σ = 334464. Its totient is φ = 160080.

The previous prime is 245477. The next prime is 245501. The reversal of 245481 is 184542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245481 - 2² = 245477 is a prime.

It is a super-2 number, since 2×245481² = 120521842722, which contains 22 as substring.

245481 is a lucky number.

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 7 ways as a sum of consecutive naturals, for example, 730 + ... + 1011.

It is an arithmetic number, because the mean of its divisors is an integer number (41808).

2²⁴⁵⁴⁸¹ is an apocalyptic number.

It is an amenable number.

245481 is a deficient number, since it is larger than the sum of its proper divisors (88983).

245481 is a wasteful number, since it uses less digits than its factorization.

245481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its digits is 1280, while the sum is 24.

The square root of 245481 is about 495.4603919588. The cubic root of 245481 is about 62.6141699831.

The spelling of 245481 in words is "two hundred forty-five thousand, four hundred eighty-one".