215039055 has 128 divisors (see below), whose sum is σ = 464486400. Its totient is φ = 82252800.

The previous prime is 215039051. The next prime is 215039063. The reversal of 215039055 is 550930512.

It is not a de Polignac number, because 215039055 - 2² = 215039051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215039051) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 899626 + ... + 899864.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^215039055 is an apocalyptic number.

215039055 is an abundant number, since it is smaller than the sum of its proper divisors (249447345).

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

215039055 is a wasteful number, since it uses less digits than its factorization.

215039055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 215039055 is about 14664.2100025879. The cubic root of 215039055 is about 599.1089133740.

Adding to 215039055 its reverse (550930512), we get a palindrome (765969567).

The spelling of 215039055 in words is "two hundred fifteen million, thirty-nine thousand, fifty-five".