200505551 has 8 divisors (see below), whose sum is σ = 207441024. Its totient is φ = 193599360.

The previous prime is 200505533. The next prime is 200505581. The reversal of 200505551 is 155505002.

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-200505551 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 (200505511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7091 + ... + 21243.

It is an arithmetic number, because the mean of its divisors is an integer number (25930128).

Almost surely, 2^200505551 is an apocalyptic number.

200505551 is a deficient number, since it is larger than the sum of its proper divisors (6935473).

200505551 is a wasteful number, since it uses less digits than its factorization.

200505551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14641.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 200505551 is about 14159.9982697739. The cubic root of 200505551 is about 585.2958797408.

The spelling of 200505551 in words is "two hundred million, five hundred five thousand, five hundred fifty-one".