1200500051 has 2 divisors, whose sum is σ = 1200500052. Its totient is φ = 1200500050.

The previous prime is 1200500023. The next prime is 1200500071. The reversal of 1200500051 is 1500050021.

It is a strong prime.

It is an emirp because it is prime and its reverse (1500050021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200500051 - 2⁶ = 1200499987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200499999 and 1200500035.

It is not a weakly prime, because it can be changed into another prime (1200500071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600250025 + 600250026.

It is an arithmetic number, because the mean of its divisors is an integer number (600250026).

Almost surely, 2^1200500051 is an apocalyptic number.

1200500051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200500051 is an equidigital number, since it uses as much as digits as its factorization.

1200500051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 1200500051 is about 34648.2330141091. The cubic root of 1200500051 is about 1062.8061552066.

Adding to 1200500051 its reverse (1500050021), we get a palindrome (2700550072).

The spelling of 1200500051 in words is "one billion, two hundred million, five hundred thousand, fifty-one".