57119221 has 4 divisors (see below), whose sum is σ = 57761100. Its totient is φ = 56477344.

The previous prime is 57119219. The next prime is 57119233. The reversal of 57119221 is 12291175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31979025 + 25140196 = 5655^2 + 5014^2 .

It is a cyclic number.

It is not a de Polignac number, because 57119221 - 2¹ = 57119219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57119221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57119921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320806 + ... + 320983.

It is an arithmetic number, because the mean of its divisors is an integer number (14440275).

Almost surely, 2^57119221 is an apocalyptic number.

It is an amenable number.

57119221 is a deficient number, since it is larger than the sum of its proper divisors (641879).

57119221 is an equidigital number, since it uses as much as digits as its factorization.

57119221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641878.

The product of its digits is 1260, while the sum is 28.

The square root of 57119221 is about 7557.7259145857. The cubic root of 57119221 is about 385.1182433232.

The spelling of 57119221 in words is "fifty-seven million, one hundred nineteen thousand, two hundred twenty-one".