43752013 has 4 divisors (see below), whose sum is σ = 43767808. Its totient is φ = 43736220.

The previous prime is 43752011. The next prime is 43752029. The reversal of 43752013 is 31025734.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43752013 - 2¹ = 43752011 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 (43752011) 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, 2523 + ... + 9688.

It is an arithmetic number, because the mean of its divisors is an integer number (10941952).

Almost surely, 2^43752013 is an apocalyptic number.

It is an amenable number.

43752013 is a deficient number, since it is larger than the sum of its proper divisors (15795).

43752013 is a wasteful number, since it uses less digits than its factorization.

43752013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15794.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 43752013 is about 6614.5304444080. The cubic root of 43752013 is about 352.3703407917.

Adding to 43752013 its reverse (31025734), we get a palindrome (74777747).

The spelling of 43752013 in words is "forty-three million, seven hundred fifty-two thousand, thirteen".