202270261 has 4 divisors (see below), whose sum is σ = 207203724. Its totient is φ = 197336800.

The previous prime is 202270259. The next prime is 202270283. The reversal of 202270261 is 162072202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162072202 = 2 ⋅81036101.

It can be written as a sum of positive squares in 2 ways, for example, as 2924100 + 199346161 = 1710^2 + 14119^2 .

It is a cyclic number.

It is not a de Polignac number, because 202270261 - 2¹ = 202270259 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 (202270661) 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 3 ways as a sum of consecutive naturals, for example, 2466670 + ... + 2466751.

It is an arithmetic number, because the mean of its divisors is an integer number (51800931).

Almost surely, 2^202270261 is an apocalyptic number.

It is an amenable number.

202270261 is a deficient number, since it is larger than the sum of its proper divisors (4933463).

202270261 is an equidigital number, since it uses as much as digits as its factorization.

202270261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4933462.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 202270261 is about 14222.1749743139. The cubic root of 202270261 is about 587.0079886154.

The spelling of 202270261 in words is "two hundred two million, two hundred seventy thousand, two hundred sixty-one".