51521343150 has 24 divisors (see below), whose sum is σ = 127772931384. Its totient is φ = 13739024800.

The previous prime is 51521343149. The next prime is 51521343173. The reversal of 51521343150 is 5134312515.

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 11 ways as a sum of consecutive naturals, for example, 171737661 + ... + 171737960.

It is an arithmetic number, because the mean of its divisors is an integer number (5323872141).

Almost surely, 2^51521343150 is an apocalyptic number.

51521343150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51521343150 is an abundant number, since it is smaller than the sum of its proper divisors (76251588234).

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

51521343150 is a wasteful number, since it uses less digits than its factorization.

51521343150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343475636 (or 343475631 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 51521343150 its reverse (5134312515), we get a palindrome (56655655665).

The spelling of 51521343150 in words is "fifty-one billion, five hundred twenty-one million, three hundred forty-three thousand, one hundred fifty".