43051369 has 4 divisors (see below), whose sum is σ = 43198596. Its totient is φ = 42904144.

The previous prime is 43051367. The next prime is 43051381. The reversal of 43051369 is 96315034.

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 33779344 + 9272025 = 5812^2 + 3045^2 .

It is a cyclic number.

It is not a de Polignac number, because 43051369 - 2¹ = 43051367 is a prime.

It is a super-2 number, since 2×43051369² = 3706840745548322, which contains 22 as substring.

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 43051369.

It is not an unprimeable number, because it can be changed into a prime (43051363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73174 + ... + 73759.

It is an arithmetic number, because the mean of its divisors is an integer number (10799649).

Almost surely, 2^43051369 is an apocalyptic number.

It is an amenable number.

43051369 is a deficient number, since it is larger than the sum of its proper divisors (147227).

43051369 is a wasteful number, since it uses less digits than its factorization.

43051369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147226.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 43051369 is about 6561.3542047355. The cubic root of 43051369 is about 350.4792590916.

The spelling of 43051369 in words is "forty-three million, fifty-one thousand, three hundred sixty-nine".