261255322 has 8 divisors (see below), whose sum is σ = 395351316. Its totient is φ = 129471552.

The previous prime is 261255283. The next prime is 261255341. The reversal of 261255322 is 223552162.

261255322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 258855921 + 2399401 = 16089^2 + 1549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577773 + ... + 578224.

Almost surely, 2^261255322 is an apocalyptic number.

261255322 is a deficient number, since it is larger than the sum of its proper divisors (134095994).

261255322 is a wasteful number, since it uses less digits than its factorization.

261255322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156112.

The product of its digits is 7200, while the sum is 28.

The square root of 261255322 is about 16163.3945073428. The cubic root of 261255322 is about 639.2759732155.

The spelling of 261255322 in words is "two hundred sixty-one million, two hundred fifty-five thousand, three hundred twenty-two".