57130222 has 4 divisors (see below), whose sum is σ = 85695336. Its totient is φ = 28565110.

The previous prime is 57130219. The next prime is 57130243. The reversal of 57130222 is 22203175.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 57130193 and 57130202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14282554 + ... + 14282557.

It is an arithmetic number, because the mean of its divisors is an integer number (21423834).

Almost surely, 2^57130222 is an apocalyptic number.

57130222 is a deficient number, since it is larger than the sum of its proper divisors (28565114).

57130222 is a wasteful number, since it uses less digits than its factorization.

57130222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28565113.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 57130222 is about 7558.4536778365. The cubic root of 57130222 is about 385.1429659633.

Adding to 57130222 its reverse (22203175), we get a palindrome (79333397).

The spelling of 57130222 in words is "fifty-seven million, one hundred thirty thousand, two hundred twenty-two".