146622481 has 2 divisors, whose sum is σ = 146622482. Its totient is φ = 146622480.

The previous prime is 146622479. The next prime is 146622491. The reversal of 146622481 is 184226641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102333456 + 44289025 = 10116^2 + 6655^2 .

It is a cyclic number.

It is not a de Polignac number, because 146622481 - 2¹ = 146622479 is a prime.

It is a super-2 number, since 2×146622481² = 42996303869190722, which contains 22 as substring.

Together with 146622479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (146622491) 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, 73311240 + 73311241.

It is an arithmetic number, because the mean of its divisors is an integer number (73311241).

Almost surely, 2^146622481 is an apocalyptic number.

It is an amenable number.

146622481 is a deficient number, since it is larger than the sum of its proper divisors (1).

146622481 is an equidigital number, since it uses as much as digits as its factorization.

146622481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 146622481 is about 12108.7770233001. Note that the first 3 decimals coincide. The cubic root of 146622481 is about 527.3110286476.

The spelling of 146622481 in words is "one hundred forty-six million, six hundred twenty-two thousand, four hundred eighty-one".