43554113 has 2 divisors, whose sum is σ = 43554114. Its totient is φ = 43554112.

The previous prime is 43554109. The next prime is 43554131. The reversal of 43554113 is 31145534.

Together with next prime (43554131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30217009 + 13337104 = 5497^2 + 3652^2 .

It is a cyclic number.

It is not a de Polignac number, because 43554113 - 2² = 43554109 is a prime.

It is not a weakly prime, because it can be changed into another prime (43554103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21777056 + 21777057.

It is an arithmetic number, because the mean of its divisors is an integer number (21777057).

Almost surely, 2^43554113 is an apocalyptic number.

It is an amenable number.

43554113 is a deficient number, since it is larger than the sum of its proper divisors (1).

43554113 is an equidigital number, since it uses as much as digits as its factorization.

43554113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 43554113 is about 6599.5540000821. The cubic root of 43554113 is about 351.8382548255.

Adding to 43554113 its reverse (31145534), we get a palindrome (74699647).

The spelling of 43554113 in words is "forty-three million, five hundred fifty-four thousand, one hundred thirteen".