162827561 has 4 divisors (see below), whose sum is σ = 175352772. Its totient is φ = 150302352.

The previous prime is 162827543. The next prime is 162827591. The reversal of 162827561 is 165728261.

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 111619225 + 51208336 = 10565^2 + 7156^2 .

It is a cyclic number.

It is not a de Polignac number, because 162827561 - 2¹⁰ = 162826537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162827521) 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 3 ways as a sum of consecutive naturals, for example, 6262586 + ... + 6262611.

It is an arithmetic number, because the mean of its divisors is an integer number (43838193).

Almost surely, 2^162827561 is an apocalyptic number.

It is an amenable number.

162827561 is a deficient number, since it is larger than the sum of its proper divisors (12525211).

162827561 is a wasteful number, since it uses less digits than its factorization.

162827561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525210.

The product of its digits is 40320, while the sum is 38.

The square root of 162827561 is about 12760.3903153469. The cubic root of 162827561 is about 546.0628597900.

The spelling of 162827561 in words is "one hundred sixty-two million, eight hundred twenty-seven thousand, five hundred sixty-one".