43061761 has 4 divisors (see below), whose sum is σ = 43074900. Its totient is φ = 43048624.

The previous prime is 43061749. The next prime is 43061797. The reversal of 43061761 is 16716034.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5313025 + 37748736 = 2305^2 + 6144^2 .

It is a cyclic number.

It is not a de Polignac number, because 43061761 - 2⁷ = 43061633 is a prime.

It is a super-2 number, since 2×43061761² = 3708630520842242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43061741) 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 3 ways as a sum of consecutive naturals, for example, 2835 + ... + 9703.

It is an arithmetic number, because the mean of its divisors is an integer number (10768725).

Almost surely, 2^43061761 is an apocalyptic number.

It is an amenable number.

43061761 is a deficient number, since it is larger than the sum of its proper divisors (13139).

43061761 is an equidigital number, since it uses as much as digits as its factorization.

43061761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13138.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 43061761 is about 6562.1460666462. The cubic root of 43061761 is about 350.5074570911.

Adding to 43061761 its reverse (16716034), we get a palindrome (59777795).

The spelling of 43061761 in words is "forty-three million, sixty-one thousand, seven hundred sixty-one".