511055100001 has 4 divisors (see below), whose sum is σ = 511097358532. Its totient is φ = 511012841472.

The previous prime is 511055099993. The next prime is 511055100029. The reversal of 511055100001 is 100001550115.

It is a happy number.

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 54992595025 + 456062504976 = 234505^2 + 675324^2 .

It is a cyclic number.

It is not a de Polignac number, because 511055100001 - 2³ = 511055099993 is a prime.

It is a super-2 number, since 2×511055100001² (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 (511055110001) 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, 21111120 + ... + 21135313.

It is an arithmetic number, because the mean of its divisors is an integer number (127774339633).

Almost surely, 2^511055100001 is an apocalyptic number.

It is an amenable number.

511055100001 is a deficient number, since it is larger than the sum of its proper divisors (42258531).

511055100001 is a wasteful number, since it uses less digits than its factorization.

511055100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42258530.

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

Adding to 511055100001 its reverse (100001550115), we get a palindrome (611056650116).

The spelling of 511055100001 in words is "five hundred eleven billion, fifty-five million, one hundred thousand, one".