601157191 has 2 divisors, whose sum is σ = 601157192. Its totient is φ = 601157190.

The previous prime is 601157189. The next prime is 601157237. The reversal of 601157191 is 191751106.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 601157191 - 2¹ = 601157189 is a prime.

It is a super-2 number, since 2×601157191² = 722779936582020962, which contains 22 as substring.

Together with 601157189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601157101) 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 as a sum of consecutive naturals, namely, 300578595 + 300578596.

It is an arithmetic number, because the mean of its divisors is an integer number (300578596).

Almost surely, 2^601157191 is an apocalyptic number.

601157191 is a deficient number, since it is larger than the sum of its proper divisors (1).

601157191 is an equidigital number, since it uses as much as digits as its factorization.

601157191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 601157191 is about 24518.5071119756. The cubic root of 601157191 is about 843.9745463562.

The spelling of 601157191 in words is "six hundred one million, one hundred fifty-seven thousand, one hundred ninety-one".