247475 has 12 divisors (see below), whose sum is σ = 323640. Its totient is φ = 187200.

The previous prime is 247463. The next prime is 247501. The reversal of 247475 is 574742.

247475 is nontrivially palindromic in base 6.

It is a de Polignac number, because none of the positive numbers 2^k-247475 is a prime.

It is a super-2 number, since 2×247475² = 122487751250, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247475.

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 11 ways as a sum of consecutive naturals, for example, 215 + ... + 735.

It is an arithmetic number, because the mean of its divisors is an integer number (26970).

2²⁴⁷⁴⁷⁵ is an apocalyptic number.

247475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

247475 is a deficient number, since it is larger than the sum of its proper divisors (76165).

247475 is a wasteful number, since it uses less digits than its factorization.

With its successor (247476) it forms an eRAP, since the sums of their prime factors are consecutive (550 and 551).

247475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 545 counting only the distinct ones).

The product of its digits is 7840, while the sum is 29.

The square root of 247475 is about 497.4685919734. The cubic root of 247475 is about 62.7832477258.

The spelling of 247475 in words is "two hundred forty-seven thousand, four hundred seventy-five".