5651562121 has 2 divisors, whose sum is σ = 5651562122. Its totient is φ = 5651562120.

The previous prime is 5651562109. The next prime is 5651562131. The reversal of 5651562121 is 1212651565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5649777225 + 1784896 = 75165^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 5651562121 - 2¹⁵ = 5651529353 is a prime.

It is not a weakly prime, because it can be changed into another prime (5651562131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825781060 + 2825781061.

It is an arithmetic number, because the mean of its divisors is an integer number (2825781061).

Almost surely, 2^5651562121 is an apocalyptic number.

It is an amenable number.

5651562121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5651562121 is an equidigital number, since it uses as much as digits as its factorization.

5651562121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 34.

The square root of 5651562121 is about 75176.8722480525. The cubic root of 5651562121 is about 1781.2416242454.

The spelling of 5651562121 in words is "five billion, six hundred fifty-one million, five hundred sixty-two thousand, one hundred twenty-one".