53887555 has 4 divisors (see below), whose sum is σ = 64665072. Its totient is φ = 43110040.

The previous prime is 53887549. The next prime is 53887567. The reversal of 53887555 is 55578835.

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

It is not a de Polignac number, because 53887555 - 2⁵ = 53887523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5388751 + ... + 5388760.

It is an arithmetic number, because the mean of its divisors is an integer number (16166268).

Almost surely, 2^53887555 is an apocalyptic number.

53887555 is a deficient number, since it is larger than the sum of its proper divisors (10777517).

53887555 is a wasteful number, since it uses less digits than its factorization.

53887555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10777516.

The product of its digits is 840000, while the sum is 46.

The square root of 53887555 is about 7340.8143281246. The cubic root of 53887555 is about 377.7137774287.

The spelling of 53887555 in words is "fifty-three million, eight hundred eighty-seven thousand, five hundred fifty-five".