43045552061 has 4 divisors (see below), whose sum is σ = 43049402172. Its totient is φ = 43041701952.

The previous prime is 43045552021. The next prime is 43045552079. The reversal of 43045552061 is 16025554034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11131516036 + 31914036025 = 105506^2 + 178645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43045552061 is a prime.

It is a super-2 number, since 2×43045552061² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43045552021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1908236 + ... + 1930661.

It is an arithmetic number, because the mean of its divisors is an integer number (10762350543).

Almost surely, 2^43045552061 is an apocalyptic number.

It is an amenable number.

43045552061 is a deficient number, since it is larger than the sum of its proper divisors (3850111).

43045552061 is a wasteful number, since it uses less digits than its factorization.

43045552061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850110.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 43045552061 in words is "forty-three billion, forty-five million, five hundred fifty-two thousand, sixty-one".