172527755214421 has 2 divisors, whose sum is σ = 172527755214422. Its totient is φ = 172527755214420.

The previous prime is 172527755214413. The next prime is 172527755214449. The reversal of 172527755214421 is 124412557725271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133489139062500 + 39038616151921 = 11553750^2 + 6248089^2 .

It is a cyclic number.

It is not a de Polignac number, because 172527755214421 - 2³ = 172527755214413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172527755214481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86263877607210 + 86263877607211.

It is an arithmetic number, because the mean of its divisors is an integer number (86263877607211).

Almost surely, 2^{172527755214421} is an apocalyptic number.

It is an amenable number.

172527755214421 is a deficient number, since it is larger than the sum of its proper divisors (1).

172527755214421 is an equidigital number, since it uses as much as digits as its factorization.

172527755214421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10976000, while the sum is 55.

The spelling of 172527755214421 in words is "one hundred seventy-two trillion, five hundred twenty-seven billion, seven hundred fifty-five million, two hundred fourteen thousand, four hundred twenty-one".