6601157 has 2 divisors, whose sum is σ = 6601158. Its totient is φ = 6601156.

The previous prime is 6601129. The next prime is 6601159. The reversal of 6601157 is 7511066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 42436 = 2561^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 6601157 - 2⁶ = 6601093 is a prime.

Together with 6601159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6601159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300578 + 3300579.

It is an arithmetic number, because the mean of its divisors is an integer number (3300579).

Almost surely, 2^6601157 is an apocalyptic number.

It is an amenable number.

6601157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6601157 is an equidigital number, since it uses as much as digits as its factorization.

6601157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 6601157 is about 2569.2716866848. The cubic root of 6601157 is about 187.5887058787.

Subtracting 6601157 from its reverse (7511066), we obtain a palindrome (909909).

The spelling of 6601157 in words is "six million, six hundred one thousand, one hundred fifty-seven".