513233012550 has 48 divisors (see below), whose sum is σ = 1272861656640. Its totient is φ = 136857428640.

The previous prime is 513233012543. The next prime is 513233012603. The reversal of 513233012550 is 55210332315.

It is a super-2 number, since 2×513233012550² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7824189 + ... + 7889511.

It is an arithmetic number, because the mean of its divisors is an integer number (26517951180).

Almost surely, 2^513233012550 is an apocalyptic number.

513233012550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

513233012550 is an abundant number, since it is smaller than the sum of its proper divisors (759628644090).

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

513233012550 is a wasteful number, since it uses less digits than its factorization.

513233012550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117717 (or 117712 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 513233012550 its reverse (55210332315), we get a palindrome (568443344865).

The spelling of 513233012550 in words is "five hundred thirteen billion, two hundred thirty-three million, twelve thousand, five hundred fifty".