262113561 has 6 divisors (see below), whose sum is σ = 378608490. Its totient is φ = 174742368.

The previous prime is 262113559. The next prime is 262113613. The reversal of 262113561 is 165311262.

262113561 is a `hidden beast` number, since 2 + 621 + 1 + 35 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 260209161 + 1904400 = 16131^2 + 1380^2 .

It is not a de Polignac number, because 262113561 - 2¹ = 262113559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (262114561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14561856 + ... + 14561873.

It is an arithmetic number, because the mean of its divisors is an integer number (63101415).

Almost surely, 2^262113561 is an apocalyptic number.

It is an amenable number.

262113561 is a deficient number, since it is larger than the sum of its proper divisors (116494929).

262113561 is a wasteful number, since it uses less digits than its factorization.

262113561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29123735 (or 29123732 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 262113561 is about 16189.9215872097. The cubic root of 262113561 is about 639.9752277195.

The spelling of 262113561 in words is "two hundred sixty-two million, one hundred thirteen thousand, five hundred sixty-one".