51390070201 has 8 divisors (see below), whose sum is σ = 52273081440. Its totient is φ = 50507458848.

The previous prime is 51390070189. The next prime is 51390070213. The reversal of 51390070201 is 10207009315.

It is an interprime number because it is at equal distance from previous prime (51390070189) and next prime (51390070213).

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

It is a cyclic number.

It is not a de Polignac number, because 51390070201 - 2⁷ = 51390070073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51390070201.

It is not an unprimeable number, because it can be changed into a prime (51390070271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165250 + ... + 360676.

It is an arithmetic number, because the mean of its divisors is an integer number (6534135180).

Almost surely, 2^51390070201 is an apocalyptic number.

It is an amenable number.

51390070201 is a deficient number, since it is larger than the sum of its proper divisors (883011239).

51390070201 is a wasteful number, since it uses less digits than its factorization.

51390070201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199943.

The product of its (nonzero) digits is 1890, while the sum is 28.

Adding to 51390070201 its reverse (10207009315), we get a palindrome (61597079516).

The spelling of 51390070201 in words is "fifty-one billion, three hundred ninety million, seventy thousand, two hundred one".