649210553 has 2 divisors, whose sum is σ = 649210554. Its totient is φ = 649210552.

The previous prime is 649210537. The next prime is 649210561. The reversal of 649210553 is 355012946.

649210553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638471824 + 10738729 = 25268^2 + 3277^2 .

It is a cyclic number.

It is not a de Polignac number, because 649210553 - 2⁴ = 649210537 is a prime.

It is not a weakly prime, because it can be changed into another prime (649210253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324605276 + 324605277.

It is an arithmetic number, because the mean of its divisors is an integer number (324605277).

Almost surely, 2^649210553 is an apocalyptic number.

It is an amenable number.

649210553 is a deficient number, since it is larger than the sum of its proper divisors (1).

649210553 is an equidigital number, since it uses as much as digits as its factorization.

649210553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 649210553 is about 25479.6105347001. The cubic root of 649210553 is about 865.8882710317. Note that the first 3 decimals are identical.

The spelling of 649210553 in words is "six hundred forty-nine million, two hundred ten thousand, five hundred fifty-three".