53216814 has 16 divisors (see below), whose sum is σ = 121638528. Its totient is φ = 15204792.

The previous prime is 53216803. The next prime is 53216857. The reversal of 53216814 is 41861235.

It is a super-3 number, since 3×53216814³ (a number of 24 digits) contains 333 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 633492 + ... + 633575.

It is an arithmetic number, because the mean of its divisors is an integer number (7602408).

Almost surely, 2^53216814 is an apocalyptic number.

53216814 is an abundant number, since it is smaller than the sum of its proper divisors (68421714).

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

53216814 is a wasteful number, since it uses less digits than its factorization.

53216814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267079.

The product of its digits is 5760, while the sum is 30.

The square root of 53216814 is about 7294.9855380254. The cubic root of 53216814 is about 376.1400894546.

The spelling of 53216814 in words is "fifty-three million, two hundred sixteen thousand, eight hundred fourteen".