2169215255 has 8 divisors (see below), whose sum is σ = 2609072592. Its totient is φ = 1731362688.

The previous prime is 2169215239. The next prime is 2169215273. The reversal of 2169215255 is 5525129612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2169215255 - 2⁴ = 2169215239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498809 + ... + 503138.

It is an arithmetic number, because the mean of its divisors is an integer number (326134074).

Almost surely, 2^2169215255 is an apocalyptic number.

2169215255 is a deficient number, since it is larger than the sum of its proper divisors (439857337).

2169215255 is a wasteful number, since it uses less digits than its factorization.

2169215255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002385.

The product of its digits is 54000, while the sum is 38.

The square root of 2169215255 is about 46574.8349970239. The cubic root of 2169215255 is about 1294.4965082542.

The spelling of 2169215255 in words is "two billion, one hundred sixty-nine million, two hundred fifteen thousand, two hundred fifty-five".