53321628291556 has 9 divisors (see below), whose sum is σ = 93312875067811. Its totient is φ = 26660806843612.

The previous prime is 53321628291541. The next prime is 53321628291571. The reversal of 53321628291556 is 65519282612335.

The square root of 53321628291556 is 7302166.

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

It is an interprime number because it is at equal distance from previous prime (53321628291541) and next prime (53321628291571).

It is a super-2 number, since 2×53321628291556² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53321628291556.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12778791 + ... + 16429873.

Almost surely, 2^{53321628291556} is an apocalyptic number.

53321628291556 is the 7302166-th square number.

It is an amenable number.

53321628291556 is a deficient number, since it is larger than the sum of its proper divisors (39991246776255).

53321628291556 is an frugal number, since it uses more digits than its factorization.

53321628291556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302170 (or 3651085 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 58.

The spelling of 53321628291556 in words is "fifty-three trillion, three hundred twenty-one billion, six hundred twenty-eight million, two hundred ninety-one thousand, five hundred fifty-six".