53507091856 has 15 divisors (see below), whose sum is σ = 103671783201. Its totient is φ = 26753083296.

The previous prime is 53507091823. The next prime is 53507091899. The reversal of 53507091856 is 65819070535.

The square root of 53507091856 is 231316.

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

It can be written as a sum of positive squares in only one way, i.e., 27727578256 + 25779513600 = 166516^2 + 160560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 896350 + ... + 954178.

Almost surely, 2^53507091856 is an apocalyptic number.

53507091856 is the 231316-th square number.

It is an amenable number.

53507091856 is a deficient number, since it is larger than the sum of its proper divisors (50164691345).

53507091856 is an frugal number, since it uses more digits than its factorization.

53507091856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115666 (or 57831 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 49.

Multiplying 53507091856 by its sum of digits (49), we get a square (2621847500944 = 1619212²).

The spelling of 53507091856 in words is "fifty-three billion, five hundred seven million, ninety-one thousand, eight hundred fifty-six".