53791405 has 4 divisors (see below), whose sum is σ = 64549692. Its totient is φ = 43033120.

The previous prime is 53791403. The next prime is 53791481. The reversal of 53791405 is 50419735.

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 12033961 + 41757444 = 3469^2 + 6462^2 .

It is not a de Polignac number, because 53791405 - 2¹ = 53791403 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 (53791403) 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, 5379136 + ... + 5379145.

It is an arithmetic number, because the mean of its divisors is an integer number (16137423).

Almost surely, 2^53791405 is an apocalyptic number.

It is an amenable number.

53791405 is a deficient number, since it is larger than the sum of its proper divisors (10758287).

53791405 is a wasteful number, since it uses less digits than its factorization.

53791405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10758286.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 53791405 is about 7334.2624032686. The cubic root of 53791405 is about 377.4889957759.

The spelling of 53791405 in words is "fifty-three million, seven hundred ninety-one thousand, four hundred five".