5651821051 has 2 divisors, whose sum is σ = 5651821052. Its totient is φ = 5651821050.

The previous prime is 5651821033. The next prime is 5651821061. The reversal of 5651821051 is 1501281565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5651821051 - 2⁹ = 5651820539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5651820998 and 5651821016.

It is not a weakly prime, because it can be changed into another prime (5651821031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825910525 + 2825910526.

It is an arithmetic number, because the mean of its divisors is an integer number (2825910526).

Almost surely, 2^5651821051 is an apocalyptic number.

5651821051 is a deficient number, since it is larger than the sum of its proper divisors (1).

5651821051 is an equidigital number, since it uses as much as digits as its factorization.

5651821051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 34.

The square root of 5651821051 is about 75178.5943670138. The cubic root of 5651821051 is about 1781.2688267451.

The spelling of 5651821051 in words is "five billion, six hundred fifty-one million, eight hundred twenty-one thousand, fifty-one".