510551235252 has 18 divisors (see below), whose sum is σ = 1290560066978. Its totient is φ = 170183745072.

The previous prime is 510551235223. The next prime is 510551235269. The reversal of 510551235252 is 252532155015.

510551235252 is a `hidden beast` number, since 5 + 1 + 0 + 5 + 5 + 123 + 525 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 509187853476 + 1363381776 = 713574^2 + 36924^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 14181978757 = 510551235252 / (5 + 1 + 0 + 5 + 5 + 1 + 2 + 3 + 5 + 2 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7090989343 + ... + 7090989414.

Almost surely, 2^510551235252 is an apocalyptic number.

It is an amenable number.

510551235252 is an abundant number, since it is smaller than the sum of its proper divisors (780008831726).

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

510551235252 is a wasteful number, since it uses less digits than its factorization.

510551235252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14181978767 (or 14181978762 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 510551235252 in words is "five hundred ten billion, five hundred fifty-one million, two hundred thirty-five thousand, two hundred fifty-two".