1046721553 has 2 divisors, whose sum is σ = 1046721554. Its totient is φ = 1046721552.

The previous prime is 1046721517. The next prime is 1046721587. The reversal of 1046721553 is 3551276401.

1046721553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (1046721587) can be obtained adding 1046721553 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019971969 + 26749584 = 31937^2 + 5172^2 .

It is an emirp because it is prime and its reverse (3551276401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1046721553 - 2¹³ = 1046713361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1046721593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523360776 + 523360777.

It is an arithmetic number, because the mean of its divisors is an integer number (523360777).

Almost surely, 2^1046721553 is an apocalyptic number.

It is an amenable number.

1046721553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1046721553 is an equidigital number, since it uses as much as digits as its factorization.

1046721553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1046721553 is about 32353.0764070436. The cubic root of 1046721553 is about 1015.3374121503.

Adding to 1046721553 its reverse (3551276401), we get a palindrome (4597997954).

The spelling of 1046721553 in words is "one billion, forty-six million, seven hundred twenty-one thousand, five hundred fifty-three".