262255661 has 4 divisors (see below), whose sum is σ = 262289052. Its totient is φ = 262222272.

The previous prime is 262255657. The next prime is 262255663. The reversal of 262255661 is 166552262.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 166552262 = 2 ⋅83276131.

It can be written as a sum of positive squares in 2 ways, for example, as 49970761 + 212284900 = 7069^2 + 14570^2 .

It is a cyclic number.

It is not a de Polignac number, because 262255661 - 2² = 262255657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (262255663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261 + ... + 23013.

It is an arithmetic number, because the mean of its divisors is an integer number (65572263).

Almost surely, 2^262255661 is an apocalyptic number.

It is an amenable number.

262255661 is a deficient number, since it is larger than the sum of its proper divisors (33391).

262255661 is a wasteful number, since it uses less digits than its factorization.

262255661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33390.

The product of its digits is 43200, while the sum is 35.

The square root of 262255661 is about 16194.3095252623. The cubic root of 262255661 is about 640.0908570554.

The spelling of 262255661 in words is "two hundred sixty-two million, two hundred fifty-five thousand, six hundred sixty-one".