53249716081 has 27 divisors (see below), whose sum is σ = 56826554841. Its totient is φ = 49893787944.

The previous prime is 53249716033. The next prime is 53249716111. The reversal of 53249716081 is 18061794235.

The square root of 53249716081 is 230759.

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

It is not a de Polignac number, because 53249716081 - 2⁹ = 53249715569 is a prime.

It is a super-2 number, since 2×53249716081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53249716381) 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, 419289040 + ... + 419289166.

It is a 1-persistent number, because it is pandigital, but 2⋅53249716081 = 106499432162 is not.

Almost surely, 2^53249716081 is an apocalyptic number.

53249716081 is the 230759-th square number.

53249716081 is the 115380-th centered octagonal number.

It is an amenable number.

53249716081 is a deficient number, since it is larger than the sum of its proper divisors (3576838760).

53249716081 is an frugal number, since it uses more digits than its factorization.

53249716081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 53249716081 in words is "fifty-three billion, two hundred forty-nine million, seven hundred sixteen thousand, eighty-one".