57220235 has 4 divisors (see below), whose sum is σ = 68664288. Its totient is φ = 45776184.

The previous prime is 57220217. The next prime is 57220259. The reversal of 57220235 is 53202275.

57220235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 57220235 - 2⁶ = 57220171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5722019 + ... + 5722028.

It is an arithmetic number, because the mean of its divisors is an integer number (17166072).

Almost surely, 2^57220235 is an apocalyptic number.

57220235 is a deficient number, since it is larger than the sum of its proper divisors (11444053).

57220235 is a wasteful number, since it uses less digits than its factorization.

57220235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11444052.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 57220235 is about 7564.4057929225. The cubic root of 57220235 is about 385.3451338131.

The spelling of 57220235 in words is "fifty-seven million, two hundred twenty thousand, two hundred thirty-five".