53355516 has 12 divisors (see below), whose sum is σ = 124496232. Its totient is φ = 17785168.

The previous prime is 53355509. The next prime is 53355539. The reversal of 53355516 is 61555335.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×53355516² = 5693622175252512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2223135 + ... + 2223158.

It is an arithmetic number, because the mean of its divisors is an integer number (10374686).

Almost surely, 2^53355516 is an apocalyptic number.

It is an amenable number.

53355516 is an abundant number, since it is smaller than the sum of its proper divisors (71140716).

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

53355516 is a wasteful number, since it uses less digits than its factorization.

53355516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446300 (or 4446298 counting only the distinct ones).

The product of its digits is 33750, while the sum is 33.

The square root of 53355516 is about 7304.4860188791. The cubic root of 53355516 is about 376.4665910402.

The spelling of 53355516 in words is "fifty-three million, three hundred fifty-five thousand, five hundred sixteen".