652081 has 2 divisors, whose sum is σ = 652082. Its totient is φ = 652080.

The previous prime is 652079. The next prime is 652087. The reversal of 652081 is 180256.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 43681 = 780^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 652081 - 2¹ = 652079 is a prime.

It is a super-2 number, since 2×652081² = 850419261122, which contains 22 as substring.

Together with 652079, it forms a pair of twin primes.

It is a Chen prime.

652081 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (652087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326040 + 326041.

It is an arithmetic number, because the mean of its divisors is an integer number (326041).

2⁶⁵²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

652081 is a deficient number, since it is larger than the sum of its proper divisors (1).

652081 is an equidigital number, since it uses as much as digits as its factorization.

652081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 652081 is about 807.5153249320. The cubic root of 652081 is about 86.7162553161.

The spelling of 652081 in words is "six hundred fifty-two thousand, eighty-one".