43456481 has 2 divisors, whose sum is σ = 43456482. Its totient is φ = 43456480.

The previous prime is 43456429. The next prime is 43456489. The reversal of 43456481 is 18465434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 6974881 = 6040^2 + 2641^2 .

It is a cyclic number.

It is not a de Polignac number, because 43456481 - 2⁶ = 43456417 is a prime.

It is a super-2 number, since 2×43456481² = 3776931481806722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43456489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21728240 + 21728241.

It is an arithmetic number, because the mean of its divisors is an integer number (21728241).

Almost surely, 2^43456481 is an apocalyptic number.

It is an amenable number.

43456481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43456481 is an equidigital number, since it uses as much as digits as its factorization.

43456481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

The square root of 43456481 is about 6592.1529866956. The cubic root of 43456481 is about 351.5751616352.

The spelling of 43456481 in words is "forty-three million, four hundred fifty-six thousand, four hundred eighty-one".