1561050047 has 2 divisors, whose sum is σ = 1561050048. Its totient is φ = 1561050046.

The previous prime is 1561050037. The next prime is 1561050053. The reversal of 1561050047 is 7400501651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1561050047 - 2¹⁶ = 1560984511 is a prime.

It is a super-3 number, since 3×1561050047³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1561050037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780525023 + 780525024.

It is an arithmetic number, because the mean of its divisors is an integer number (780525024).

Almost surely, 2^1561050047 is an apocalyptic number.

1561050047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1561050047 is an equidigital number, since it uses as much as digits as its factorization.

1561050047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1561050047 is about 39510.1258793236. The cubic root of 1561050047 is about 1160.0381594165.

Adding to 1561050047 its reverse (7400501651), we get a palindrome (8961551698).

The spelling of 1561050047 in words is "one billion, five hundred sixty-one million, fifty thousand, forty-seven".