6121245533 has 4 divisors (see below), whose sum is σ = 6592110588. Its totient is φ = 5650380480.

The previous prime is 6121245527. The next prime is 6121245563. The reversal of 6121245533 is 3355421216.

It is a happy number.

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 414651769 + 5706593764 = 20363^2 + 75542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6121245533 - 2⁴ = 6121245517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6121245533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6121245563) 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, 235432508 + ... + 235432533.

It is an arithmetic number, because the mean of its divisors is an integer number (1648027647).

Almost surely, 2^6121245533 is an apocalyptic number.

It is an amenable number.

6121245533 is a deficient number, since it is larger than the sum of its proper divisors (470865055).

6121245533 is a wasteful number, since it uses less digits than its factorization.

6121245533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470865054.

The product of its digits is 21600, while the sum is 32.

The square root of 6121245533 is about 78238.3891257994. The cubic root of 6121245533 is about 1829.2789352658.

Adding to 6121245533 its reverse (3355421216), we get a palindrome (9476666749).

The spelling of 6121245533 in words is "six billion, one hundred twenty-one million, two hundred forty-five thousand, five hundred thirty-three".