57161219 has 8 divisors (see below), whose sum is σ = 57853440. Its totient is φ = 56472136.

The previous prime is 57161207. The next prime is 57161231. The reversal of 57161219 is 91216175.

It is an interprime number because it is at equal distance from previous prime (57161207) and next prime (57161231).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57161219 is a prime.

It is a super-2 number, since 2×57161219² = 6534809915131922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57161239) 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, 76562 + ... + 77304.

It is an arithmetic number, because the mean of its divisors is an integer number (7231680).

Almost surely, 2^57161219 is an apocalyptic number.

57161219 is a deficient number, since it is larger than the sum of its proper divisors (692221).

57161219 is a wasteful number, since it uses less digits than its factorization.

57161219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569.

The product of its digits is 3780, while the sum is 32.

The square root of 57161219 is about 7560.5038853240. The cubic root of 57161219 is about 385.2126087177.

The spelling of 57161219 in words is "fifty-seven million, one hundred sixty-one thousand, two hundred nineteen".