57147216 has 40 divisors (see below), whose sum is σ = 168721344. Its totient is φ = 16327680.

The previous prime is 57147199. The next prime is 57147239. The reversal of 57147216 is 61274175.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84705 + ... + 85376.

Almost surely, 2^57147216 is an apocalyptic number.

57147216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

57147216 is an abundant number, since it is smaller than the sum of its proper divisors (111574128).

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

57147216 is a wasteful number, since it uses less digits than its factorization.

57147216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170099 (or 170093 counting only the distinct ones).

The product of its digits is 11760, while the sum is 33.

The square root of 57147216 is about 7559.5777659867. The cubic root of 57147216 is about 385.1811504855.

The spelling of 57147216 in words is "fifty-seven million, one hundred forty-seven thousand, two hundred sixteen".