162088561 has 4 divisors (see below), whose sum is σ = 162323824. Its totient is φ = 161853300.

The previous prime is 162088519. The next prime is 162088573. The reversal of 162088561 is 165880261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 162088561 - 2⁹ = 162088049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162088561.

It is not an unprimeable number, because it can be changed into a prime (162038561) 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, 116595 + ... + 117976.

It is an arithmetic number, because the mean of its divisors is an integer number (40580956).

Almost surely, 2^162088561 is an apocalyptic number.

It is an amenable number.

162088561 is a deficient number, since it is larger than the sum of its proper divisors (235263).

162088561 is an equidigital number, since it uses as much as digits as its factorization.

162088561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235262.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 162088561 is about 12731.4005906656. The cubic root of 162088561 is about 545.2354968009.

The spelling of 162088561 in words is "one hundred sixty-two million, eighty-eight thousand, five hundred sixty-one".