6151861 has 4 divisors (see below), whose sum is σ = 6159712. Its totient is φ = 6144012.

The previous prime is 6151853. The next prime is 6151867. The reversal of 6151861 is 1681516.

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 6151861 - 2³ = 6151853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6151867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2601 + ... + 4366.

It is an arithmetic number, because the mean of its divisors is an integer number (1539928).

Almost surely, 2^6151861 is an apocalyptic number.

It is an amenable number.

6151861 is a deficient number, since it is larger than the sum of its proper divisors (7851).

6151861 is an equidigital number, since it uses as much as digits as its factorization.

6151861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850.

The product of its digits is 1440, while the sum is 28.

The square root of 6151861 is about 2480.2945389610. The cubic root of 6151861 is about 183.2323583537.

The spelling of 6151861 in words is "six million, one hundred fifty-one thousand, eight hundred sixty-one".