261351202 has 24 divisors (see below), whose sum is σ = 468362844. Its totient is φ = 108978912.

The previous prime is 261351151. The next prime is 261351203. The reversal of 261351202 is 202153162.

It can be written as a sum of positive squares in 2 ways, for example, as 260790201 + 561001 = 16149^2 + 749^2 .

It is not an unprimeable number, because it can be changed into a prime (261351203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32413 + ... + 39664.

Almost surely, 2^261351202 is an apocalyptic number.

261351202 is a deficient number, since it is larger than the sum of its proper divisors (207011642).

261351202 is a wasteful number, since it uses less digits than its factorization.

261351202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72130 (or 72123 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 261351202 is about 16166.3601964078. The cubic root of 261351202 is about 639.3541678377.

The spelling of 261351202 in words is "two hundred sixty-one million, three hundred fifty-one thousand, two hundred two".