605751121 has 4 divisors (see below), whose sum is σ = 605852212. Its totient is φ = 605650032.

The previous prime is 605751073. The next prime is 605751127. The reversal of 605751121 is 121157506.

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 71216721 + 534534400 = 8439^2 + 23120^2 .

It is a cyclic number.

It is not a de Polignac number, because 605751121 - 2¹⁵ = 605718353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 605751121.

It is not an unprimeable number, because it can be changed into a prime (605751127) 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, 40950 + ... + 53743.

It is an arithmetic number, because the mean of its divisors is an integer number (151463053).

Almost surely, 2^605751121 is an apocalyptic number.

It is an amenable number.

605751121 is a deficient number, since it is larger than the sum of its proper divisors (101091).

605751121 is an equidigital number, since it uses as much as digits as its factorization.

605751121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101090.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 605751121 is about 24612.0117219215. The cubic root of 605751121 is about 846.1189247798.

The spelling of 605751121 in words is "six hundred five million, seven hundred fifty-one thousand, one hundred twenty-one".