5312066621 has 2 divisors, whose sum is σ = 5312066622. Its totient is φ = 5312066620.

The previous prime is 5312066611. The next prime is 5312066647. The reversal of 5312066621 is 1266602135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5269308100 + 42758521 = 72590^2 + 6539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5312066621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5312066611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2656033310 + 2656033311.

It is an arithmetic number, because the mean of its divisors is an integer number (2656033311).

Almost surely, 2^5312066621 is an apocalyptic number.

It is an amenable number.

5312066621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5312066621 is an equidigital number, since it uses as much as digits as its factorization.

5312066621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 5312066621 is about 72883.9256695192. The cubic root of 5312066621 is about 1744.8355628665.

Adding to 5312066621 its reverse (1266602135), we get a palindrome (6578668756).

The spelling of 5312066621 in words is "five billion, three hundred twelve million, sixty-six thousand, six hundred twenty-one".