605506121 has 4 divisors (see below), whose sum is σ = 660552144. Its totient is φ = 550460100.

The previous prime is 605506049. The next prime is 605506169. The reversal of 605506121 is 121605506.

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 a cyclic number.

It is not a de Polignac number, because 605506121 - 2²² = 601311817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605500121) 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, 27522995 + ... + 27523016.

It is an arithmetic number, because the mean of its divisors is an integer number (165138036).

Almost surely, 2^605506121 is an apocalyptic number.

It is an amenable number.

605506121 is a deficient number, since it is larger than the sum of its proper divisors (55046023).

605506121 is a wasteful number, since it uses less digits than its factorization.

605506121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55046022.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 605506121 is about 24607.0339740490. The cubic root of 605506121 is about 846.0048366208.

The spelling of 605506121 in words is "six hundred five million, five hundred six thousand, one hundred twenty-one".