511011055 has 4 divisors (see below), whose sum is σ = 613213272. Its totient is φ = 408808840.

The previous prime is 511011047. The next prime is 511011071. The reversal of 511011055 is 550110115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 511011055 - 2³ = 511011047 is a prime.

It is a super-2 number, since 2×511011055² = 522264596664426050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51101101 + ... + 51101110.

It is an arithmetic number, because the mean of its divisors is an integer number (153303318).

Almost surely, 2^511011055 is an apocalyptic number.

511011055 is a deficient number, since it is larger than the sum of its proper divisors (102202217).

511011055 is a wasteful number, since it uses less digits than its factorization.

511011055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102202216.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 511011055 is about 22605.5536317959. The cubic root of 511011055 is about 799.4845924944.

The spelling of 511011055 in words is "five hundred eleven million, eleven thousand, fifty-five".