172055305527 has 16 divisors (see below), whose sum is σ = 262333881600. Its totient is φ = 98259429312.

The previous prime is 172055305451. The next prime is 172055305553. The reversal of 172055305527 is 725503550271.

It is not a de Polignac number, because 172055305527 - 2¹¹ = 172055303479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172055305567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2375478 + ... + 2446835.

It is an arithmetic number, because the mean of its divisors is an integer number (16395867600).

Almost surely, 2^172055305527 is an apocalyptic number.

172055305527 is a deficient number, since it is larger than the sum of its proper divisors (90278576073).

172055305527 is a wasteful number, since it uses less digits than its factorization.

172055305527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824022.

The product of its (nonzero) digits is 367500, while the sum is 42.

Adding to 172055305527 its reverse (725503550271), we get a palindrome (897558855798).

The spelling of 172055305527 in words is "one hundred seventy-two billion, fifty-five million, three hundred five thousand, five hundred twenty-seven".