553950809 has 2 divisors, whose sum is σ = 553950810. Its totient is φ = 553950808.

The previous prime is 553950799. The next prime is 553950847. The reversal of 553950809 is 908059355.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 529230025 + 24720784 = 23005^2 + 4972^2 .

It is a cyclic number.

It is not a de Polignac number, because 553950809 - 2¹⁶ = 553885273 is a prime.

It is a super-2 number, since 2×553950809² = 613722997583508962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 553950809.

It is not a weakly prime, because it can be changed into another prime (553950889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276975404 + 276975405.

It is an arithmetic number, because the mean of its divisors is an integer number (276975405).

Almost surely, 2^553950809 is an apocalyptic number.

It is an amenable number.

553950809 is a deficient number, since it is larger than the sum of its proper divisors (1).

553950809 is an equidigital number, since it uses as much as digits as its factorization.

553950809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 553950809 is about 23536.1596060190. The cubic root of 553950809 is about 821.2783990297.

The spelling of 553950809 in words is "five hundred fifty-three million, nine hundred fifty thousand, eight hundred nine".