43148081 has 4 divisors (see below), whose sum is σ = 43163172. Its totient is φ = 43132992.

The previous prime is 43148041. The next prime is 43148089. The reversal of 43148081 is 18084134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18084134 = 2 ⋅9042067.

It can be written as a sum of positive squares in 2 ways, for example, as 23425600 + 19722481 = 4840^2 + 4441^2 .

It is a cyclic number.

It is not a de Polignac number, because 43148081 - 2¹⁸ = 42885937 is a prime.

It is a super-2 number, since 2×43148081² = 3723513787965122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43148089) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1796 + ... + 9461.

It is an arithmetic number, because the mean of its divisors is an integer number (10790793).

Almost surely, 2^43148081 is an apocalyptic number.

It is an amenable number.

43148081 is a deficient number, since it is larger than the sum of its proper divisors (15091).

43148081 is a wasteful number, since it uses less digits than its factorization.

43148081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15090.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 43148081 is about 6568.7198905114. The cubic root of 43148081 is about 350.7415054976.

The spelling of 43148081 in words is "forty-three million, one hundred forty-eight thousand, eighty-one".