601213501 has 4 divisors (see below), whose sum is σ = 687101152. Its totient is φ = 515325852.

The previous prime is 601213489. The next prime is 601213507. The reversal of 601213501 is 105312106.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 601213501 - 2⁷ = 601213373 is a prime.

It is a super-2 number, since 2×601213501² = 722915347569354002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601213507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42943815 + ... + 42943828.

It is an arithmetic number, because the mean of its divisors is an integer number (171775288).

Almost surely, 2^601213501 is an apocalyptic number.

It is an amenable number.

601213501 is a deficient number, since it is larger than the sum of its proper divisors (85887651).

601213501 is an equidigital number, since it uses as much as digits as its factorization.

601213501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85887650.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 601213501 is about 24519.6554013306. The cubic root of 601213501 is about 844.0008970476. Note that the first 3 decimals are identical.

Adding to 601213501 its reverse (105312106), we get a palindrome (706525607).

The spelling of 601213501 in words is "six hundred one million, two hundred thirteen thousand, five hundred one".