51543002002 has 8 divisors (see below), whose sum is σ = 78023810700. Its totient is φ = 25535065104.

The previous prime is 51543001969. The next prime is 51543002051. The reversal of 51543002002 is 20020034515.

It can be written as a sum of positive squares in 2 ways, for example, as 46470856041 + 5072145961 = 215571^2 + 71219^2 .

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

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, 118217677 + ... + 118218112.

Almost surely, 2^51543002002 is an apocalyptic number.

51543002002 is a deficient number, since it is larger than the sum of its proper divisors (26480808698).

51543002002 is a wasteful number, since it uses less digits than its factorization.

51543002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236435900.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 51543002002 its reverse (20020034515), we get a palindrome (71563036517).

The spelling of 51543002002 in words is "fifty-one billion, five hundred forty-three million, two thousand, two".