43745761 has 6 divisors (see below), whose sum is σ = 44358630. Its totient is φ = 43141248.

The previous prime is 43745759. The next prime is 43745783. The reversal of 43745761 is 16754734.

It can be written as a sum of positive squares in 3 ways, for example, as 1742400 + 42003361 = 1320^2 + 6481^2 .

It is not a de Polignac number, because 43745761 - 2¹ = 43745759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43745761.

It is not an unprimeable number, because it can be changed into a prime (43745791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1225 + ... + 9433.

It is an arithmetic number, because the mean of its divisors is an integer number (7393105).

Almost surely, 2^43745761 is an apocalyptic number.

It is an amenable number.

43745761 is a deficient number, since it is larger than the sum of its proper divisors (612869).

43745761 is an frugal number, since it uses more digits than its factorization.

43745761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355 (or 8282 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 43745761 is about 6614.0578316190. The cubic root of 43745761 is about 352.3535558550.

The spelling of 43745761 in words is "forty-three million, seven hundred forty-five thousand, seven hundred sixty-one".