1566650051 has 2 divisors, whose sum is σ = 1566650052. Its totient is φ = 1566650050.

The previous prime is 1566650021. The next prime is 1566650053. The reversal of 1566650051 is 1500566651.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1566650051 is a prime.

Together with 1566650053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1566649993 and 1566650020.

It is not a weakly prime, because it can be changed into another prime (1566650053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 783325025 + 783325026.

It is an arithmetic number, because the mean of its divisors is an integer number (783325026).

Almost surely, 2^1566650051 is an apocalyptic number.

1566650051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1566650051 is an equidigital number, since it uses as much as digits as its factorization.

1566650051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1566650051 is about 39580.9303958358. The cubic root of 1566650051 is about 1161.4236511374.

The spelling of 1566650051 in words is "one billion, five hundred sixty-six million, six hundred fifty thousand, fifty-one".