261550346 has 4 divisors (see below), whose sum is σ = 392325522. Its totient is φ = 130775172.

The previous prime is 261550343. The next prime is 261550361. The reversal of 261550346 is 643055162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 246144721 + 15405625 = 15689^2 + 3925^2 .

It is not an unprimeable number, because it can be changed into a prime (261550343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65387585 + ... + 65387588.

Almost surely, 2^261550346 is an apocalyptic number.

261550346 is a deficient number, since it is larger than the sum of its proper divisors (130775176).

261550346 is a wasteful number, since it uses less digits than its factorization.

261550346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130775175.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 261550346 is about 16172.5182331015. The cubic root of 261550346 is about 639.5165179880.

The spelling of 261550346 in words is "two hundred sixty-one million, five hundred fifty thousand, three hundred forty-six".