51303243097 has 4 divisors (see below), whose sum is σ = 51571846656. Its totient is φ = 51034639540.

The previous prime is 51303243083. The next prime is 51303243151. The reversal of 51303243097 is 79034230315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51303243097 - 2¹¹ = 51303241049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51304243097) 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, 134301493 + ... + 134301874.

It is an arithmetic number, because the mean of its divisors is an integer number (12892961664).

Almost surely, 2^51303243097 is an apocalyptic number.

It is an amenable number.

51303243097 is a deficient number, since it is larger than the sum of its proper divisors (268603559).

51303243097 is a wasteful number, since it uses less digits than its factorization.

51303243097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268603558.

The product of its (nonzero) digits is 68040, while the sum is 37.

The spelling of 51303243097 in words is "fifty-one billion, three hundred three million, two hundred forty-three thousand, ninety-seven".