162511121 has 4 divisors (see below), whose sum is σ = 164120244. Its totient is φ = 160902000.

The previous prime is 162511103. The next prime is 162511127. The reversal of 162511121 is 121115261.

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 113720896 + 48790225 = 10664^2 + 6985^2 .

It is a cyclic number.

It is not a de Polignac number, because 162511121 - 2¹⁴ = 162494737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 162511093 and 162511102.

It is not an unprimeable number, because it can be changed into a prime (162511127) 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, 804410 + ... + 804611.

It is an arithmetic number, because the mean of its divisors is an integer number (41030061).

Almost surely, 2^162511121 is an apocalyptic number.

It is an amenable number.

162511121 is a deficient number, since it is larger than the sum of its proper divisors (1609123).

162511121 is a wasteful number, since it uses less digits than its factorization.

162511121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609122.

The product of its digits is 120, while the sum is 20.

The square root of 162511121 is about 12747.9849780269. The cubic root of 162511121 is about 545.7088898417.

Adding to 162511121 its reverse (121115261), we get a palindrome (283626382).

The spelling of 162511121 in words is "one hundred sixty-two million, five hundred eleven thousand, one hundred twenty-one".