553121773 has 2 divisors, whose sum is σ = 553121774. Its totient is φ = 553121772.

The previous prime is 553121761. The next prime is 553121797. The reversal of 553121773 is 377121355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541818729 + 11303044 = 23277^2 + 3362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-553121773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (553121573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276560886 + 276560887.

It is an arithmetic number, because the mean of its divisors is an integer number (276560887).

Almost surely, 2^553121773 is an apocalyptic number.

It is an amenable number.

553121773 is a deficient number, since it is larger than the sum of its proper divisors (1).

553121773 is an equidigital number, since it uses as much as digits as its factorization.

553121773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22050, while the sum is 34.

The square root of 553121773 is about 23518.5410474374. The cubic root of 553121773 is about 820.8684894067.

The spelling of 553121773 in words is "five hundred fifty-three million, one hundred twenty-one thousand, seven hundred seventy-three".