43087261 has 8 divisors (see below), whose sum is σ = 49282560. Its totient is φ = 36901968.

The previous prime is 43087229. The next prime is 43087283. The reversal of 43087261 is 16278034.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43087261 - 2⁵ = 43087229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43087201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14055 + ... + 16843.

It is an arithmetic number, because the mean of its divisors is an integer number (6160320).

Almost surely, 2^43087261 is an apocalyptic number.

It is an amenable number.

43087261 is a deficient number, since it is larger than the sum of its proper divisors (6195299).

43087261 is a wasteful number, since it uses less digits than its factorization.

43087261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 43087261 is about 6564.0887410211. The cubic root of 43087261 is about 350.5766304231.

The spelling of 43087261 in words is "forty-three million, eighty-seven thousand, two hundred sixty-one".