248143465 has 4 divisors (see below), whose sum is σ = 297772164. Its totient is φ = 198514768.

The previous prime is 248143447. The next prime is 248143471. The reversal of 248143465 is 564341842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564341842 = 2 ⋅282170921.

It can be written as a sum of positive squares in 2 ways, for example, as 125731369 + 122412096 = 11213^2 + 11064^2 .

It is a cyclic number.

It is not a de Polignac number, because 248143465 - 2⁹ = 248142953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24814342 + ... + 24814351.

It is an arithmetic number, because the mean of its divisors is an integer number (74443041).

Almost surely, 2^248143465 is an apocalyptic number.

It is an amenable number.

248143465 is a deficient number, since it is larger than the sum of its proper divisors (49628699).

248143465 is an equidigital number, since it uses as much as digits as its factorization.

248143465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49628698.

The product of its digits is 92160, while the sum is 37.

The square root of 248143465 is about 15752.5701077634. The cubic root of 248143465 is about 628.3972571716.

The spelling of 248143465 in words is "two hundred forty-eight million, one hundred forty-three thousand, four hundred sixty-five".