601022381 has 2 divisors, whose sum is σ = 601022382. Its totient is φ = 601022380.

The previous prime is 601022377. The next prime is 601022449. The reversal of 601022381 is 183220106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551545225 + 49477156 = 23485^2 + 7034^2 .

It is a cyclic number.

It is not a de Polignac number, because 601022381 - 2² = 601022377 is a prime.

It is a super-2 number, since 2×601022381² = 722455804925818322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601022311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300511190 + 300511191.

It is an arithmetic number, because the mean of its divisors is an integer number (300511191).

Almost surely, 2^601022381 is an apocalyptic number.

It is an amenable number.

601022381 is a deficient number, since it is larger than the sum of its proper divisors (1).

601022381 is an equidigital number, since it uses as much as digits as its factorization.

601022381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 601022381 is about 24515.7578100290. The cubic root of 601022381 is about 843.9114543085.

Adding to 601022381 its reverse (183220106), we get a palindrome (784242487).

The spelling of 601022381 in words is "six hundred one million, twenty-two thousand, three hundred eighty-one".