51135752210 has 8 divisors (see below), whose sum is σ = 92044353996. Its totient is φ = 20454300880.

The previous prime is 51135752153. The next prime is 51135752233. The reversal of 51135752210 is 1225753115.

It can be written as a sum of positive squares in 2 ways, for example, as 50091363721 + 1044388489 = 223811^2 + 32317^2 .

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

It is a super-2 number, since 2×51135752210² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556787601 + ... + 2556787620.

Almost surely, 2^51135752210 is an apocalyptic number.

51135752210 is a deficient number, since it is larger than the sum of its proper divisors (40908601786).

51135752210 is a wasteful number, since it uses less digits than its factorization.

51135752210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113575228.

The product of its (nonzero) digits is 10500, while the sum is 32.

The spelling of 51135752210 in words is "fifty-one billion, one hundred thirty-five million, seven hundred fifty-two thousand, two hundred ten".