51022002520213 has 4 divisors (see below), whose sum is σ = 51026815473228. Its totient is φ = 51017189567200.

The previous prime is 51022002520201. The next prime is 51022002520217. The reversal of 51022002520213 is 31202520022015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43161509946564 + 7860492573649 = 6569742^2 + 2803657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51022002520213 is a prime.

It is a super-3 number, since 3×51022002520213³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51022002520217) 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, 2406460606 + ... + 2406481807.

It is an arithmetic number, because the mean of its divisors is an integer number (12756703868307).

Almost surely, 2^{51022002520213} is an apocalyptic number.

It is an amenable number.

51022002520213 is a deficient number, since it is larger than the sum of its proper divisors (4812953015).

51022002520213 is a wasteful number, since it uses less digits than its factorization.

51022002520213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812953014.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51022002520213 its reverse (31202520022015), we get a palindrome (82224522542228).

The spelling of 51022002520213 in words is "fifty-one trillion, twenty-two billion, two million, five hundred twenty thousand, two hundred thirteen".