51225035530 has 8 divisors (see below), whose sum is σ = 92205063972. Its totient is φ = 20490014208.

The previous prime is 51225035497. The next prime is 51225035539. The reversal of 51225035530 is 3553052215.

It can be written as a sum of positive squares in 2 ways, for example, as 43907430681 + 7317604849 = 209541^2 + 85543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51225035492 and 51225035501.

It is not an unprimeable number, because it can be changed into a prime (51225035539) 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, 2561251767 + ... + 2561251786.

Almost surely, 2^51225035530 is an apocalyptic number.

51225035530 is a deficient number, since it is larger than the sum of its proper divisors (40980028442).

51225035530 is a wasteful number, since it uses less digits than its factorization.

51225035530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122503560.

The product of its (nonzero) digits is 22500, while the sum is 31.

Adding to 51225035530 its reverse (3553052215), we get a palindrome (54778087745).

The spelling of 51225035530 in words is "fifty-one billion, two hundred twenty-five million, thirty-five thousand, five hundred thirty".