30321055552553 has 2 divisors, whose sum is σ = 30321055552554. Its totient is φ = 30321055552552.

The previous prime is 30321055552549. The next prime is 30321055552621. The reversal of 30321055552553 is 35525555012303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21545081822224 + 8775973730329 = 4641668^2 + 2962427^2 .

It is a cyclic number.

It is not a de Polignac number, because 30321055552553 - 2² = 30321055552549 is a prime.

It is a super-2 number, since 2×30321055552553² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30321055552253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160527776276 + 15160527776277.

It is an arithmetic number, because the mean of its divisors is an integer number (15160527776277).

Almost surely, 2^{30321055552553} is an apocalyptic number.

It is an amenable number.

30321055552553 is a deficient number, since it is larger than the sum of its proper divisors (1).

30321055552553 is an equidigital number, since it uses as much as digits as its factorization.

30321055552553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1687500, while the sum is 44.

The spelling of 30321055552553 in words is "thirty trillion, three hundred twenty-one billion, fifty-five million, five hundred fifty-two thousand, five hundred fifty-three".