2051330521 has 2 divisors, whose sum is σ = 2051330522. Its totient is φ = 2051330520.

The previous prime is 2051330429. The next prime is 2051330569. The reversal of 2051330521 is 1250331502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852097296 + 199233225 = 43036^2 + 14115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051330521 - 2¹⁵ = 2051297753 is a prime.

It is a super-2 number, since 2×2051330521² = 8415913812772262882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2051330492 and 2051330501.

It is not a weakly prime, because it can be changed into another prime (2051330581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025665260 + 1025665261.

It is an arithmetic number, because the mean of its divisors is an integer number (1025665261).

Almost surely, 2^2051330521 is an apocalyptic number.

It is an amenable number.

2051330521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051330521 is an equidigital number, since it uses as much as digits as its factorization.

2051330521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2051330521 is about 45291.6164538207. The cubic root of 2051330521 is about 1270.6088636102.

The spelling of 2051330521 in words is "two billion, fifty-one million, three hundred thirty thousand, five hundred twenty-one".