261056622 has 8 divisors (see below), whose sum is σ = 522113256. Its totient is φ = 87018872.

The previous prime is 261056603. The next prime is 261056623. The reversal of 261056622 is 226650162.

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

261056622 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 261056622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261056623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21754713 + ... + 21754724.

It is an arithmetic number, because the mean of its divisors is an integer number (65264157).

Almost surely, 2^261056622 is an apocalyptic number.

261056622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261056622 is a wasteful number, since it uses less digits than its factorization.

261056622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43509442.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 261056622 is about 16157.2467332773. The cubic root of 261056622 is about 639.1138631493.

The spelling of 261056622 in words is "two hundred sixty-one million, fifty-six thousand, six hundred twenty-two".