152022161 has 4 divisors (see below), whose sum is σ = 152270772. Its totient is φ = 151773552.

The previous prime is 152022151. The next prime is 152022163. The reversal of 152022161 is 161220251.

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 9339136 + 142683025 = 3056^2 + 11945^2 .

It is a cyclic number.

It is not a de Polignac number, because 152022161 - 2¹⁰ = 152021137 is a prime.

It is a super-2 number, since 2×152022161² = 46221474870219842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152022163) 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, 123386 + ... + 124611.

It is an arithmetic number, because the mean of its divisors is an integer number (38067693).

Almost surely, 2^152022161 is an apocalyptic number.

It is an amenable number.

152022161 is a deficient number, since it is larger than the sum of its proper divisors (248611).

152022161 is an equidigital number, since it uses as much as digits as its factorization.

152022161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248610.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 152022161 is about 12329.7267204103. The cubic root of 152022161 is about 533.7062646458.

The spelling of 152022161 in words is "one hundred fifty-two million, twenty-two thousand, one hundred sixty-one".