6011921 has 4 divisors (see below), whose sum is σ = 6017844. Its totient is φ = 6006000.

The previous prime is 6011899. The next prime is 6011933. The reversal of 6011921 is 1291106.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 698896 + 5313025 = 836^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6011921 is a prime.

It is a super-2 number, since 2×6011921² = 72286388220482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6011893 and 6011902.

It is not an unprimeable number, because it can be changed into a prime (6011221) 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, 1010 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (1504461).

Almost surely, 2^6011921 is an apocalyptic number.

It is an amenable number.

6011921 is a deficient number, since it is larger than the sum of its proper divisors (5923).

6011921 is a wasteful number, since it uses less digits than its factorization.

6011921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 6011921 is about 2451.9218992456. The cubic root of 6011921 is about 181.8323235288.

The spelling of 6011921 in words is "six million, eleven thousand, nine hundred twenty-one".