53875815 has 16 divisors (see below), whose sum is σ = 98515968. Its totient is φ = 24628896.

The previous prime is 53875807. The next prime is 53875817. The reversal of 53875815 is 51857835.

It is a happy number.

53875815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53875815 - 2³ = 53875807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53875817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256447 + ... + 256656.

It is an arithmetic number, because the mean of its divisors is an integer number (6157248).

Almost surely, 2^53875815 is an apocalyptic number.

53875815 is a deficient number, since it is larger than the sum of its proper divisors (44640153).

53875815 is a wasteful number, since it uses less digits than its factorization.

53875815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513118.

The product of its digits is 168000, while the sum is 42.

The square root of 53875815 is about 7340.0146457620. The cubic root of 53875815 is about 377.6863457282.

The spelling of 53875815 in words is "fifty-three million, eight hundred seventy-five thousand, eight hundred fifteen".