552769621 has 2 divisors, whose sum is σ = 552769622. Its totient is φ = 552769620.

The previous prime is 552769573. The next prime is 552769639. The reversal of 552769621 is 126967255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 552767121 + 2500 = 23511^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 552769621 - 2¹⁵ = 552736853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552769661) 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, 276384810 + 276384811.

It is an arithmetic number, because the mean of its divisors is an integer number (276384811).

Almost surely, 2^552769621 is an apocalyptic number.

It is an amenable number.

552769621 is a deficient number, since it is larger than the sum of its proper divisors (1).

552769621 is an equidigital number, since it uses as much as digits as its factorization.

552769621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 43.

The square root of 552769621 is about 23511.0531665428. The cubic root of 552769621 is about 820.6942469747.

The spelling of 552769621 in words is "five hundred fifty-two million, seven hundred sixty-nine thousand, six hundred twenty-one".