1550744047 has 2 divisors, whose sum is σ = 1550744048. Its totient is φ = 1550744046.

The previous prime is 1550744003. The next prime is 1550744051. The reversal of 1550744047 is 7404470551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1550744047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1550743997 and 1550744015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1550744747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775372023 + 775372024.

It is an arithmetic number, because the mean of its divisors is an integer number (775372024).

Almost surely, 2^1550744047 is an apocalyptic number.

1550744047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550744047 is an equidigital number, since it uses as much as digits as its factorization.

1550744047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 37.

The square root of 1550744047 is about 39379.4876426802. The cubic root of 1550744047 is about 1157.4796764621.

The spelling of 1550744047 in words is "one billion, five hundred fifty million, seven hundred forty-four thousand, forty-seven".