53206803556 has 81 divisors (see below), whose sum is σ = 99872280417. Its totient is φ = 24801208320.

The previous prime is 53206803553. The next prime is 53206803571. The reversal of 53206803556 is 65530860235.

The square root of 53206803556 is 230666.

It is a perfect power (a square), and thus also a powerful number.

53206803556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 13 ways, for example, as 51216216100 + 1990587456 = 226310^2 + 44616^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53206803553) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 548523700 + ... + 548523796.

Almost surely, 2^53206803556 is an apocalyptic number.

53206803556 is the 230666-th square number.

It is an amenable number.

53206803556 is a deficient number, since it is larger than the sum of its proper divisors (46665476861).

53206803556 is an equidigital number, since it uses as much as digits as its factorization.

53206803556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 53206803556 in words is "fifty-three billion, two hundred six million, eight hundred three thousand, five hundred fifty-six".