215955103 has 24 divisors (see below), whose sum is σ = 271594512. Its totient is φ = 170198784.

The previous prime is 215955101. The next prime is 215955107. The reversal of 215955103 is 301559512.

It is not a de Polignac number, because 215955103 - 2¹ = 215955101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215955101) 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 23 ways as a sum of consecutive naturals, for example, 220551 + ... + 221527.

It is an arithmetic number, because the mean of its divisors is an integer number (11316438).

Almost surely, 2^215955103 is an apocalyptic number.

215955103 is a deficient number, since it is larger than the sum of its proper divisors (55639409).

215955103 is a wasteful number, since it uses less digits than its factorization.

215955103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 215955103 is about 14695.4109503613. The cubic root of 215955103 is about 599.9584258231.

The spelling of 215955103 in words is "two hundred fifteen million, nine hundred fifty-five thousand, one hundred three".