6121281 has 4 divisors (see below), whose sum is σ = 8161712. Its totient is φ = 4080852.

The previous prime is 6121261. The next prime is 6121319. The reversal of 6121281 is 1821216.

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 not a de Polignac number, because 6121281 - 2¹¹ = 6119233 is a prime.

It is a super-2 number, since 2×6121281² = 74940162161922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6121201) 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, 1020211 + ... + 1020216.

It is an arithmetic number, because the mean of its divisors is an integer number (2040428).

Almost surely, 2^6121281 is an apocalyptic number.

It is an amenable number.

6121281 is a deficient number, since it is larger than the sum of its proper divisors (2040431).

6121281 is a wasteful number, since it uses less digits than its factorization.

6121281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040430.

The product of its digits is 192, while the sum is 21.

The square root of 6121281 is about 2474.1222686036. The cubic root of 6121281 is about 182.9282468257.

Adding to 6121281 its reverse (1821216), we get a palindrome (7942497).

The spelling of 6121281 in words is "six million, one hundred twenty-one thousand, two hundred eighty-one".