162553609 has 8 divisors (see below), whose sum is σ = 172254600. Its totient is φ = 152868096.

The previous prime is 162553583. The next prime is 162553619. The reversal of 162553609 is 906355261.

It can be written as a sum of positive squares in 4 ways, for example, as 1974025 + 160579584 = 1405^2 + 12672^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162553609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162553619) 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 7 ways as a sum of consecutive naturals, for example, 23247 + ... + 29419.

It is an arithmetic number, because the mean of its divisors is an integer number (21531825).

Almost surely, 2^162553609 is an apocalyptic number.

It is an amenable number.

162553609 is a deficient number, since it is larger than the sum of its proper divisors (9700991).

162553609 is a wasteful number, since it uses less digits than its factorization.

162553609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7739.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 162553609 is about 12749.6513285658. The cubic root of 162553609 is about 545.7564436313.

The spelling of 162553609 in words is "one hundred sixty-two million, five hundred fifty-three thousand, six hundred nine".