6111961 has 4 divisors (see below), whose sum is σ = 6123492. Its totient is φ = 6100432.

The previous prime is 6111943. The next prime is 6111967. The reversal of 6111961 is 1691116.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1806336 + 4305625 = 1344^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 6111961 - 2²¹ = 4014809 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 (6111967) 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, 4930 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (1530873).

Almost surely, 2^6111961 is an apocalyptic number.

It is an amenable number.

6111961 is a deficient number, since it is larger than the sum of its proper divisors (11531).

6111961 is a wasteful number, since it uses less digits than its factorization.

6111961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11530.

The product of its digits is 324, while the sum is 25.

The square root of 6111961 is about 2472.2380548806. The cubic root of 6111961 is about 182.8353600994.

The spelling of 6111961 in words is "six million, one hundred eleven thousand, nine hundred sixty-one".