247375 has 8 divisors (see below), whose sum is σ = 308880. Its totient is φ = 197800.

The previous prime is 247369. The next prime is 247381. The reversal of 247375 is 573742.

247375 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (247369) and next prime (247381).

It is not a de Polignac number, because 247375 - 2⁵ = 247343 is a prime.

It is a super-2 number, since 2×247375² = 122388781250, which contains 22 as substring.

247375 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (38610).

2²⁴⁷³⁷⁵ is an apocalyptic number.

247375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

247375 is a deficient number, since it is larger than the sum of its proper divisors (61505).

247375 is an equidigital number, since it uses as much as digits as its factorization.

247375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 1984 counting only the distinct ones).

The product of its digits is 5880, while the sum is 28.

The square root of 247375 is about 497.3680729601. The cubic root of 247375 is about 62.7747900760.

It can be divided in two parts, 24737 and 5, that added together give a palindrome (24742).

The spelling of 247375 in words is "two hundred forty-seven thousand, three hundred seventy-five".