43254081 has 20 divisors (see below), whose sum is σ = 69586132. Its totient is φ = 26617248.

The previous prime is 43254059. The next prime is 43254091. The reversal of 43254081 is 18045234.

43254081 is a `hidden beast` number, since 43 + 2 + 540 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24591681 + 18662400 = 4959^2 + 4320^2 .

It is not a de Polignac number, because 43254081 - 2¹⁵ = 43221313 is a prime.

It is a super-2 number, since 2×43254081² = 3741831046309122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43254091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19486 + ... + 21591.

Almost surely, 2^43254081 is an apocalyptic number.

It is an amenable number.

43254081 is a deficient number, since it is larger than the sum of its proper divisors (26332051).

43254081 is a wasteful number, since it uses less digits than its factorization.

43254081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41102 (or 41093 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 43254081 is about 6576.7834843486. The cubic root of 43254081 is about 351.0284877163.

The spelling of 43254081 in words is "forty-three million, two hundred fifty-four thousand, eighty-one".