601221501 has 16 divisors (see below), whose sum is σ = 894928320. Its totient is φ = 398910960.

The previous prime is 601221497. The next prime is 601221563. The reversal of 601221501 is 105122106.

It is not a de Polignac number, because 601221501 - 2² = 601221497 is a prime.

It is a super-2 number, since 2×601221501² = 722934586529386002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601223501) 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 in 15 ways as a sum of consecutive naturals, for example, 47070 + ... + 58463.

It is an arithmetic number, because the mean of its divisors is an integer number (55933020).

Almost surely, 2^601221501 is an apocalyptic number.

It is an amenable number.

601221501 is a deficient number, since it is larger than the sum of its proper divisors (293706819).

601221501 is a wasteful number, since it uses less digits than its factorization.

601221501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105753 (or 105747 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 601221501 is about 24519.8185352176. The cubic root of 601221501 is about 844.0046405748.

Adding to 601221501 its reverse (105122106), we get a palindrome (706343607).

The spelling of 601221501 in words is "six hundred one million, two hundred twenty-one thousand, five hundred one".