511051055 has 4 divisors (see below), whose sum is σ = 613261272. Its totient is φ = 408840840.

The previous prime is 511050997. The next prime is 511051081. The reversal of 511051055 is 550150115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550150115 = 5 ⋅110030023.

It is not a de Polignac number, because 511051055 - 2¹⁸ = 510788911 is a prime.

It is a super-2 number, since 2×511051055² = 522346361633226050, which contains 22 as substring.

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 511051055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51105101 + ... + 51105110.

It is an arithmetic number, because the mean of its divisors is an integer number (153315318).

Almost surely, 2^511051055 is an apocalyptic number.

511051055 is a deficient number, since it is larger than the sum of its proper divisors (102210217).

511051055 is a wasteful number, since it uses less digits than its factorization.

511051055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102210216.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 511051055 is about 22606.4383528233. The cubic root of 511051055 is about 799.5054521535.

It can be divided in two parts, 5110 and 51055, that added together give a palindrome (56165).

The spelling of 511051055 in words is "five hundred eleven million, fifty-one thousand, fifty-five".