15530455273 has 2 divisors, whose sum is σ = 15530455274. Its totient is φ = 15530455272.

The previous prime is 15530455271. The next prime is 15530455427. The reversal of 15530455273 is 37255403551.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8736080089 + 6794375184 = 93467^2 + 82428^2 .

It is a cyclic number.

It is not a de Polignac number, because 15530455273 - 2¹ = 15530455271 is a prime.

Together with 15530455271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15530455271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765227636 + 7765227637.

It is an arithmetic number, because the mean of its divisors is an integer number (7765227637).

Almost surely, 2^15530455273 is an apocalyptic number.

It is an amenable number.

15530455273 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530455273 is an equidigital number, since it uses as much as digits as its factorization.

15530455273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315000, while the sum is 40.

The spelling of 15530455273 in words is "fifteen billion, five hundred thirty million, four hundred fifty-five thousand, two hundred seventy-three".