53155986 has 16 divisors (see below), whose sum is σ = 114489984. Its totient is φ = 16355664.

The previous prime is 53155951. The next prime is 53155987. The reversal of 53155986 is 68955135.

It is not an unprimeable number, because it can be changed into a prime (53155987) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 340666 + ... + 340821.

It is an arithmetic number, because the mean of its divisors is an integer number (7155624).

Almost surely, 2^53155986 is an apocalyptic number.

53155986 is an abundant number, since it is smaller than the sum of its proper divisors (61333998).

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

53155986 is a wasteful number, since it uses less digits than its factorization.

53155986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681505.

The product of its digits is 162000, while the sum is 42.

The square root of 53155986 is about 7290.8151807600. The cubic root of 53155986 is about 375.9967226589.

The spelling of 53155986 in words is "fifty-three million, one hundred fifty-five thousand, nine hundred eighty-six".