51351300520001 has 4 divisors (see below), whose sum is σ = 51400724294400. Its totient is φ = 51301876745604.

The previous prime is 51351300519947. The next prime is 51351300520081. The reversal of 51351300520001 is 10002500315315.

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 51351300520001 - 2¹⁸ = 51351300257857 is a prime.

It is a super-3 number, since 3×51351300520001³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51351300520081) 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, 24711885641 + ... + 24711887718.

It is an arithmetic number, because the mean of its divisors is an integer number (12850181073600).

Almost surely, 2^{51351300520001} is an apocalyptic number.

It is an amenable number.

51351300520001 is a deficient number, since it is larger than the sum of its proper divisors (49423774399).

51351300520001 is a wasteful number, since it uses less digits than its factorization.

51351300520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49423774398.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 51351300520001 its reverse (10002500315315), we get a palindrome (61353800835316).

The spelling of 51351300520001 in words is "fifty-one trillion, three hundred fifty-one billion, three hundred million, five hundred twenty thousand, one".