1226615051 has 2 divisors, whose sum is σ = 1226615052. Its totient is φ = 1226615050.

The previous prime is 1226615021. The next prime is 1226615069. The reversal of 1226615051 is 1505166221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226615051 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1226615011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613307525 + 613307526.

It is an arithmetic number, because the mean of its divisors is an integer number (613307526).

Almost surely, 2^1226615051 is an apocalyptic number.

1226615051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226615051 is an equidigital number, since it uses as much as digits as its factorization.

1226615051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1226615051 is about 35023.0645575170. The cubic root of 1226615051 is about 1070.4575010999.

The spelling of 1226615051 in words is "one billion, two hundred twenty-six million, six hundred fifteen thousand, fifty-one".