511005450121 has 4 divisors (see below), whose sum is σ = 511022750992. Its totient is φ = 510988149252.

The previous prime is 511005450097. The next prime is 511005450127. The reversal of 511005450121 is 121054500115.

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 511005450121 - 2⁵ = 511005450089 is a prime.

It is a super-2 number, since 2×511005450121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511005450127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8606055 + ... + 8665228.

It is an arithmetic number, because the mean of its divisors is an integer number (127755687748).

Almost surely, 2^511005450121 is an apocalyptic number.

It is an amenable number.

511005450121 is a deficient number, since it is larger than the sum of its proper divisors (17300871).

511005450121 is a wasteful number, since it uses less digits than its factorization.

511005450121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17300870.

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 511005450121 its reverse (121054500115), we get a palindrome (632059950236).

The spelling of 511005450121 in words is "five hundred eleven billion, five million, four hundred fifty thousand, one hundred twenty-one".