215732055 has 48 divisors (see below), whose sum is σ = 438044544. Its totient is φ = 89651520.

The previous prime is 215732003. The next prime is 215732059. The reversal of 215732055 is 550237512.

It is not a de Polignac number, because 215732055 - 2⁶ = 215731991 is a prime.

It is a super-3 number, since 3×215732055³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215732059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5257 + ... + 21426.

It is an arithmetic number, because the mean of its divisors is an integer number (9125928).

Almost surely, 2^215732055 is an apocalyptic number.

215732055 is an abundant number, since it is smaller than the sum of its proper divisors (222312489).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215732055 is a wasteful number, since it uses less digits than its factorization.

215732055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26716 (or 26709 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 215732055 is about 14687.8199539619. The cubic root of 215732055 is about 599.7518001200.

Adding to 215732055 its reverse (550237512), we get a palindrome (765969567).

The spelling of 215732055 in words is "two hundred fifteen million, seven hundred thirty-two thousand, fifty-five".