200155061 has 4 divisors (see below), whose sum is σ = 201430092. Its totient is φ = 198880032.

The previous prime is 200155051. The next prime is 200155073. The reversal of 200155061 is 160551002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160551002 = 2 ⋅80275501.

It can be written as a sum of positive squares in 2 ways, for example, as 72352036 + 127803025 = 8506^2 + 11305^2 .

It is a cyclic number.

It is not a de Polignac number, because 200155061 - 2¹⁴ = 200138677 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 (200155001) 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 3 ways as a sum of consecutive naturals, for example, 637280 + ... + 637593.

It is an arithmetic number, because the mean of its divisors is an integer number (50357523).

Almost surely, 2^200155061 is an apocalyptic number.

It is an amenable number.

200155061 is a deficient number, since it is larger than the sum of its proper divisors (1275031).

200155061 is a wasteful number, since it uses less digits than its factorization.

200155061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275030.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 200155061 is about 14147.6167957716. The cubic root of 200155061 is about 584.9546423060.

The spelling of 200155061 in words is "two hundred million, one hundred fifty-five thousand, sixty-one".