43087057 has 12 divisors (see below), whose sum is σ = 46933644. Its totient is φ = 39536640.

The previous prime is 43087021. The next prime is 43087087. The reversal of 43087057 is 75078034.

It can be written as a sum of positive squares in 6 ways, for example, as 3094081 + 39992976 = 1759^2 + 6324^2 .

It is not a de Polignac number, because 43087057 - 2⁷ = 43086929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43087087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31957 + ... + 33277.

It is an arithmetic number, because the mean of its divisors is an integer number (3911137).

Almost surely, 2^43087057 is an apocalyptic number.

It is an amenable number.

43087057 is a deficient number, since it is larger than the sum of its proper divisors (3846587).

43087057 is a wasteful number, since it uses less digits than its factorization.

43087057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 43087057 is about 6564.0732019075. The cubic root of 43087057 is about 350.5760771448.

The spelling of 43087057 in words is "forty-three million, eighty-seven thousand, fifty-seven".