51143513252 has 48 divisors (see below), whose sum is σ = 102100143600. Its totient is φ = 22206492672.

The previous prime is 51143513249. The next prime is 51143513261. The reversal of 51143513252 is 25231534115.

It can be written as a sum of positive squares in 8 ways, for example, as 1350268516 + 49793244736 = 36746^2 + 223144^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2241968 + ... + 2264664.

It is an arithmetic number, because the mean of its divisors is an integer number (2127086325).

Almost surely, 2^51143513252 is an apocalyptic number.

51143513252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51143513252 is a deficient number, since it is larger than the sum of its proper divisors (50956630348).

51143513252 is a wasteful number, since it uses less digits than its factorization.

51143513252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25280 (or 25278 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The spelling of 51143513252 in words is "fifty-one billion, one hundred forty-three million, five hundred thirteen thousand, two hundred fifty-two".