43391052 has 36 divisors (see below), whose sum is σ = 113747816. Its totient is φ = 14463360.

The previous prime is 43391039. The next prime is 43391053. The reversal of 43391052 is 25019334.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43391053) 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, 21349 + ... + 23292.

Almost surely, 2^43391052 is an apocalyptic number.

It is an amenable number.

43391052 is an abundant number, since it is smaller than the sum of its proper divisors (70356764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43391052 is a wasteful number, since it uses less digits than its factorization.

43391052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44660 (or 44646 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 43391052 is about 6587.1884746074. The cubic root of 43391052 is about 351.3986266658.

The spelling of 43391052 in words is "forty-three million, three hundred ninety-one thousand, fifty-two".