208922057 has 8 divisors (see below), whose sum is σ = 211833600. Its totient is φ = 206017344.

The previous prime is 208922033. The next prime is 208922083. The reversal of 208922057 is 750229802.

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-208922057 is a prime.

It is a super-2 number, since 2×208922057² = 87296851802222498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208922557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101444 + ... + 103482.

It is an arithmetic number, because the mean of its divisors is an integer number (26479200).

Almost surely, 2^208922057 is an apocalyptic number.

It is an amenable number.

208922057 is a deficient number, since it is larger than the sum of its proper divisors (2911543).

208922057 is a wasteful number, since it uses less digits than its factorization.

208922057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 208922057 is about 14454.1363284009. The cubic root of 208922057 is about 593.3734328480.

The spelling of 208922057 in words is "two hundred eight million, nine hundred twenty-two thousand, fifty-seven".