261004226 has 16 divisors (see below), whose sum is σ = 448381440. Its totient is φ = 111622560.

The previous prime is 261004217. The next prime is 261004243. The reversal of 261004226 is 622400162.

It is a super-3 number, since 3×261004226³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12755 + ... + 26166.

It is an arithmetic number, because the mean of its divisors is an integer number (28023840).

Almost surely, 2^261004226 is an apocalyptic number.

261004226 is a deficient number, since it is larger than the sum of its proper divisors (187377214).

261004226 is a wasteful number, since it uses less digits than its factorization.

261004226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39409.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 261004226 is about 16155.6252122906. The cubic root of 261004226 is about 639.0711019910.

Adding to 261004226 its reverse (622400162), we get a palindrome (883404388).

The spelling of 261004226 in words is "two hundred sixty-one million, four thousand, two hundred twenty-six".