613121051 has 12 divisors (see below), whose sum is σ = 674682120. Its totient is φ = 555588000.

The previous prime is 613121027. The next prime is 613121053. The reversal of 613121051 is 150121316.

613121051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-613121051 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 (613121053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20450 + ... + 40551.

It is an arithmetic number, because the mean of its divisors is an integer number (56223510).

Almost surely, 2^613121051 is an apocalyptic number.

613121051 is a deficient number, since it is larger than the sum of its proper divisors (61561069).

613121051 is a wasteful number, since it uses less digits than its factorization.

613121051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61066 (or 61043 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 613121051 is about 24761.2812875263. The cubic root of 613121051 is about 849.5365644427.

Adding to 613121051 its reverse (150121316), we get a palindrome (763242367).

The spelling of 613121051 in words is "six hundred thirteen million, one hundred twenty-one thousand, fifty-one".