208052551 has 16 divisors (see below), whose sum is σ = 241116480. Its totient is φ = 175841280.

The previous prime is 208052539. The next prime is 208052557. The reversal of 208052551 is 155250802.

It is a cyclic number.

It is not a de Polignac number, because 208052551 - 2¹³ = 208044359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208052557) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 195561 + ... + 196621.

It is an arithmetic number, because the mean of its divisors is an integer number (15069780).

Almost surely, 2^208052551 is an apocalyptic number.

208052551 is a deficient number, since it is larger than the sum of its proper divisors (33063929).

208052551 is a wasteful number, since it uses less digits than its factorization.

208052551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 208052551 is about 14424.0268649223. The cubic root of 208052551 is about 592.5491075987.

The spelling of 208052551 in words is "two hundred eight million, fifty-two thousand, five hundred fifty-one".