51303211250 has 80 divisors (see below), whose sum is σ = 101113851960. Its totient is φ = 19488000000.

The previous prime is 51303211229. The next prime is 51303211259. The reversal of 51303211250 is 5211230315.

It is a happy number.

It can be written as a sum of positive squares in 20 ways, for example, as 21561104569 + 29742106681 = 146837^2 + 172459^2 .

It is not an unprimeable number, because it can be changed into a prime (51303211259) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2199650 + ... + 2222850.

Almost surely, 2^51303211250 is an apocalyptic number.

51303211250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51303211250 is a deficient number, since it is larger than the sum of its proper divisors (49810640710).

51303211250 is a wasteful number, since it uses less digits than its factorization.

51303211250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23313 (or 23298 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 51303211250 its reverse (5211230315), we get a palindrome (56514441565).

The spelling of 51303211250 in words is "fifty-one billion, three hundred three million, two hundred eleven thousand, two hundred fifty".