6115891 has 4 divisors (see below), whose sum is σ = 6437800. Its totient is φ = 5793984.

The previous prime is 6115877. The next prime is 6115909. The reversal of 6115891 is 1985116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6115891 - 2⁵ = 6115859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6115871) 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, 160926 + ... + 160963.

It is an arithmetic number, because the mean of its divisors is an integer number (1609450).

Almost surely, 2^6115891 is an apocalyptic number.

6115891 is a deficient number, since it is larger than the sum of its proper divisors (321909).

6115891 is a wasteful number, since it uses less digits than its factorization.

6115891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321908.

The product of its digits is 2160, while the sum is 31.

The square root of 6115891 is about 2473.0327535235. The cubic root of 6115891 is about 182.8745395058.

The spelling of 6115891 in words is "six million, one hundred fifteen thousand, eight hundred ninety-one".