53887578 has 16 divisors (see below), whose sum is σ = 109252416. Its totient is φ = 17716320.

The previous prime is 53887573. The next prime is 53887601. The reversal of 53887578 is 87578835.

It is a self number, because there is not a number n which added to its sum of digits gives 53887578.

It is not an unprimeable number, because it can be changed into a prime (53887573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61078 + ... + 61953.

It is an arithmetic number, because the mean of its divisors is an integer number (6828276).

Almost surely, 2^53887578 is an apocalyptic number.

53887578 is an abundant number, since it is smaller than the sum of its proper divisors (55364838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53887578 is a wasteful number, since it uses less digits than its factorization.

53887578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123109.

The product of its digits is 1881600, while the sum is 51.

The square root of 53887578 is about 7340.8158947082. The cubic root of 53887578 is about 377.7138311666.

The spelling of 53887578 in words is "fifty-three million, eight hundred eighty-seven thousand, five hundred seventy-eight".