511102056252 has 12 divisors (see below), whose sum is σ = 1192571464616. Its totient is φ = 170367352080.

The previous prime is 511102056221. The next prime is 511102056271. The reversal of 511102056252 is 252650201115.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×511102056252² (a number of 24 digits) contains 22 as substring.

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, 21295918999 + ... + 21295919022.

Almost surely, 2^511102056252 is an apocalyptic number.

It is an amenable number.

511102056252 is an abundant number, since it is smaller than the sum of its proper divisors (681469408364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511102056252 is a wasteful number, since it uses less digits than its factorization.

511102056252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42591838028 (or 42591838026 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 511102056252 its reverse (252650201115), we get a palindrome (763752257367).

The spelling of 511102056252 in words is "five hundred eleven billion, one hundred two million, fifty-six thousand, two hundred fifty-two".