53353986 has 16 divisors (see below), whose sum is σ = 121952064. Its totient is φ = 15243984.

The previous prime is 53353981. The next prime is 53353991. The reversal of 53353986 is 68935335.

It is an interprime number because it is at equal distance from previous prime (53353981) and next prime (53353991).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1270333 = 53353986 / (5 + 3 + 3 + 5 + 3 + 9 + 8 + 6).

It is not an unprimeable number, because it can be changed into a prime (53353981) 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, 635125 + ... + 635208.

It is an arithmetic number, because the mean of its divisors is an integer number (7622004).

Almost surely, 2^53353986 is an apocalyptic number.

53353986 is an abundant number, since it is smaller than the sum of its proper divisors (68598078).

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

53353986 is a wasteful number, since it uses less digits than its factorization.

53353986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270345.

The product of its digits is 291600, while the sum is 42.

The square root of 53353986 is about 7304.3812879668. The cubic root of 53353986 is about 376.4629925407.

The spelling of 53353986 in words is "fifty-three million, three hundred fifty-three thousand, nine hundred eighty-six".