48143681 has 4 divisors (see below), whose sum is σ = 48157632. Its totient is φ = 48129732.

The previous prime is 48143621. The next prime is 48143707. The reversal of 48143681 is 18634184.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48143681 is a prime.

It is a super-2 number, since 2×48143681² = 4635628040459522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48143611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420 + ... + 10106.

It is an arithmetic number, because the mean of its divisors is an integer number (12039408).

Almost surely, 2^48143681 is an apocalyptic number.

It is an amenable number.

48143681 is a deficient number, since it is larger than the sum of its proper divisors (13951).

48143681 is an equidigital number, since it uses as much as digits as its factorization.

48143681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13950.

The product of its digits is 18432, while the sum is 35.

The square root of 48143681 is about 6938.5647651370. The cubic root of 48143681 is about 363.7863763844.

The spelling of 48143681 in words is "forty-eight million, one hundred forty-three thousand, six hundred eighty-one".