51322544513437 has 2 divisors, whose sum is σ = 51322544513438. Its totient is φ = 51322544513436.

The previous prime is 51322544513423. The next prime is 51322544513459. The reversal of 51322544513437 is 73431544522315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51319256752516 + 3287760921 = 7163746^2 + 57339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51322544513437 is a prime.

It is a super-3 number, since 3×51322544513437³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51322544573437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25661272256718 + 25661272256719.

It is an arithmetic number, because the mean of its divisors is an integer number (25661272256719).

Almost surely, 2^{51322544513437} is an apocalyptic number.

It is an amenable number.

51322544513437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51322544513437 is an equidigital number, since it uses as much as digits as its factorization.

51322544513437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048000, while the sum is 49.

The spelling of 51322544513437 in words is "fifty-one trillion, three hundred twenty-two billion, five hundred forty-four million, five hundred thirteen thousand, four hundred thirty-seven".