202861261 has 2 divisors, whose sum is σ = 202861262. Its totient is φ = 202861260.

The previous prime is 202861199. The next prime is 202861277. The reversal of 202861261 is 162168202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188375625 + 14485636 = 13725^2 + 3806^2 .

It is a cyclic number.

It is not a de Polignac number, because 202861261 - 2¹⁷ = 202730189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202861961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101430630 + 101430631.

It is an arithmetic number, because the mean of its divisors is an integer number (101430631).

Almost surely, 2^202861261 is an apocalyptic number.

It is an amenable number.

202861261 is a deficient number, since it is larger than the sum of its proper divisors (1).

202861261 is an equidigital number, since it uses as much as digits as its factorization.

202861261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 202861261 is about 14242.9372321863. The cubic root of 202861261 is about 587.5791458787.

The spelling of 202861261 in words is "two hundred two million, eight hundred sixty-one thousand, two hundred sixty-one".