57220346 has 4 divisors (see below), whose sum is σ = 85830522. Its totient is φ = 28610172.

The previous prime is 57220333. The next prime is 57220357. The reversal of 57220346 is 64302275.

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

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 19704721 = 6125^2 + 4439^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14305085 + ... + 14305088.

Almost surely, 2^57220346 is an apocalyptic number.

57220346 is a deficient number, since it is larger than the sum of its proper divisors (28610176).

57220346 is a wasteful number, since it uses less digits than its factorization.

57220346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28610175.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 57220346 is about 7564.4131299130. The cubic root of 57220346 is about 385.3453829865.

The spelling of 57220346 in words is "fifty-seven million, two hundred twenty thousand, three hundred forty-six".