262220561 has 8 divisors (see below), whose sum is σ = 264358080. Its totient is φ = 260090128.

The previous prime is 262220557. The next prime is 262220573. The reversal of 262220561 is 165022262.

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

It is a cyclic number.

It is not a de Polignac number, because 262220561 - 2² = 262220557 is a prime.

It is a super-2 number, since 2×262220561² = 137519245222309442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 262220561.

It is not an unprimeable number, because it can be changed into a prime (262220551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91610 + ... + 94428.

It is an arithmetic number, because the mean of its divisors is an integer number (33044760).

Almost surely, 2^262220561 is an apocalyptic number.

It is an amenable number.

262220561 is a deficient number, since it is larger than the sum of its proper divisors (2137519).

262220561 is a wasteful number, since it uses less digits than its factorization.

262220561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 262220561 is about 16193.2257749962. The cubic root of 262220561 is about 640.0622994367.

The spelling of 262220561 in words is "two hundred sixty-two million, two hundred twenty thousand, five hundred sixty-one".