6151961 has 2 divisors, whose sum is σ = 6151962. Its totient is φ = 6151960.

The previous prime is 6151939. The next prime is 6151969. The reversal of 6151961 is 1691516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4177936 + 1974025 = 2044^2 + 1405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6151961 is a prime.

It is a Chen prime.

It is equal to p₄₂₂₅₇₉ and since 6151961 and 422579 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6151969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3075980 + 3075981.

It is an arithmetic number, because the mean of its divisors is an integer number (3075981).

Almost surely, 2^6151961 is an apocalyptic number.

It is an amenable number.

6151961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6151961 is an equidigital number, since it uses as much as digits as its factorization.

6151961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 29.

The square root of 6151961 is about 2480.3146977753. The cubic root of 6151961 is about 183.2333511772.

The spelling of 6151961 in words is "six million, one hundred fifty-one thousand, nine hundred sixty-one".