43452481 has 2 divisors, whose sum is σ = 43452482. Its totient is φ = 43452480.

The previous prime is 43452463. The next prime is 43452491. The reversal of 43452481 is 18425434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 14561856 = 5375^2 + 3816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43452481 is a prime.

It is a super-2 number, since 2×43452481² = 3776236210110722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43452401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21726240 + 21726241.

It is an arithmetic number, because the mean of its divisors is an integer number (21726241).

Almost surely, 2^43452481 is an apocalyptic number.

It is an amenable number.

43452481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43452481 is an equidigital number, since it uses as much as digits as its factorization.

43452481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

The square root of 43452481 is about 6591.8495886966. The cubic root of 43452481 is about 351.5643742623.

The spelling of 43452481 in words is "forty-three million, four hundred fifty-two thousand, four hundred eighty-one".