32072981 has 2 divisors, whose sum is σ = 32072982. Its totient is φ = 32072980.

The previous prime is 32072977. The next prime is 32072983. The reversal of 32072981 is 18927023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22648081 + 9424900 = 4759^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 32072981 - 2² = 32072977 is a prime.

It is a super-2 number, since 2×32072981² = 2057352220452722, which contains 22 as substring.

Together with 32072983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32072983) 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 as a sum of consecutive naturals, namely, 16036490 + 16036491.

It is an arithmetic number, because the mean of its divisors is an integer number (16036491).

Almost surely, 2^32072981 is an apocalyptic number.

It is an amenable number.

32072981 is a deficient number, since it is larger than the sum of its proper divisors (1).

32072981 is an equidigital number, since it uses as much as digits as its factorization.

32072981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 32072981 is about 5663.3012457400. The cubic root of 32072981 is about 317.7213815523.

The spelling of 32072981 in words is "thirty-two million, seventy-two thousand, nine hundred eighty-one".