262158961 has 4 divisors (see below), whose sum is σ = 268553124. Its totient is φ = 255764800.

The previous prime is 262158943. The next prime is 262158973. The reversal of 262158961 is 169851262.

262158961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145950561 + 116208400 = 12081^2 + 10780^2 .

It is a cyclic number.

It is not a de Polignac number, because 262158961 - 2⁷ = 262158833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (262158901) 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, 3197020 + ... + 3197101.

It is an arithmetic number, because the mean of its divisors is an integer number (67138281).

Almost surely, 2^262158961 is an apocalyptic number.

It is an amenable number.

262158961 is a deficient number, since it is larger than the sum of its proper divisors (6394163).

262158961 is an equidigital number, since it uses as much as digits as its factorization.

262158961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394162.

The product of its digits is 51840, while the sum is 40.

The square root of 262158961 is about 16191.3236333538. The cubic root of 262158961 is about 640.0121750614.

The spelling of 262158961 in words is "two hundred sixty-two million, one hundred fifty-eight thousand, nine hundred sixty-one".