172282185457 has 2 divisors, whose sum is σ = 172282185458. Its totient is φ = 172282185456.

The previous prime is 172282185353. The next prime is 172282185463. The reversal of 172282185457 is 754581282271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139445483776 + 32836701681 = 373424^2 + 181209^2 .

It is an emirp because it is prime and its reverse (754581282271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172282185457 - 2⁷ = 172282185329 is a prime.

It is not a weakly prime, because it can be changed into another prime (172282185557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86141092728 + 86141092729.

It is an arithmetic number, because the mean of its divisors is an integer number (86141092729).

Almost surely, 2^172282185457 is an apocalyptic number.

It is an amenable number.

172282185457 is a deficient number, since it is larger than the sum of its proper divisors (1).

172282185457 is an equidigital number, since it uses as much as digits as its factorization.

172282185457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2508800, while the sum is 52.

The spelling of 172282185457 in words is "one hundred seventy-two billion, two hundred eighty-two million, one hundred eighty-five thousand, four hundred fifty-seven".