53043913 has 4 divisors (see below), whose sum is σ = 57124228. Its totient is φ = 48963600.

The previous prime is 53043901. The next prime is 53043941. The reversal of 53043913 is 31934035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17665209 + 35378704 = 4203^2 + 5948^2 .

It is a cyclic number.

It is not a de Polignac number, because 53043913 - 2¹⁷ = 52912841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53043943) 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, 2040138 + ... + 2040163.

It is an arithmetic number, because the mean of its divisors is an integer number (14281057).

Almost surely, 2^53043913 is an apocalyptic number.

It is an amenable number.

53043913 is a deficient number, since it is larger than the sum of its proper divisors (4080315).

53043913 is a wasteful number, since it uses less digits than its factorization.

53043913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080314.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 53043913 is about 7283.1252220458. The cubic root of 53043913 is about 375.7322887813.

Adding to 53043913 its reverse (31934035), we get a palindrome (84977948).

It can be divided in two parts, 53043 and 913, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 53043913 in words is "fifty-three million, forty-three thousand, nine hundred thirteen".