5815740121 has 3 divisors (see below), whose sum is σ = 5815816383. Its totient is φ = 5815663860.

The previous prime is 5815740109. The next prime is 5815740131. The reversal of 5815740121 is 1210475185.

The square root of 5815740121 is 76261.

It is a perfect power (a square), and thus also a powerful number.

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 only one way, i.e., 2893256521 + 2922483600 = 53789^2 + 54060^2 .

It is not a de Polignac number, because 5815740121 - 2²³ = 5807351513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5815740101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 38131 + ... + 114391.

It is an arithmetic number, because the mean of its divisors is an integer number (1938605461).

Almost surely, 2^5815740121 is an apocalyptic number.

5815740121 is the 76261-st square number.

5815740121 is the 38131-st centered octagonal number.

It is an amenable number.

5815740121 is a deficient number, since it is larger than the sum of its proper divisors (76262).

5815740121 is an frugal number, since it uses more digits than its factorization.

5815740121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152522 (or 76261 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 34.

The cubic root of 5815740121 is about 1798.3256158908.

The spelling of 5815740121 in words is "five billion, eight hundred fifteen million, seven hundred forty thousand, one hundred twenty-one".