43261887 has 8 divisors (see below), whose sum is σ = 57937536. Its totient is φ = 28713752.

The previous prime is 43261877. The next prime is 43261891. The reversal of 43261887 is 78816234.

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 43261887 - 2¹⁸ = 42999743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43261877) 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, 31083 + ... + 32444.

It is an arithmetic number, because the mean of its divisors is an integer number (7242192).

Almost surely, 2^43261887 is an apocalyptic number.

43261887 is a deficient number, since it is larger than the sum of its proper divisors (14675649).

43261887 is a wasteful number, since it uses less digits than its factorization.

43261887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63757.

The product of its digits is 64512, while the sum is 39.

The square root of 43261887 is about 6577.3769087684. The cubic root of 43261887 is about 351.0496029768.

The spelling of 43261887 in words is "forty-three million, two hundred sixty-one thousand, eight hundred eighty-seven".