1009215255 has 16 divisors (see below), whose sum is σ = 1649101824. Its totient is φ = 526795680.

The previous prime is 1009215253. The next prime is 1009215281. The reversal of 1009215255 is 5525129001.

It is not a de Polignac number, because 1009215255 - 2¹ = 1009215253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009215253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715051 + ... + 716460.

It is an arithmetic number, because the mean of its divisors is an integer number (103068864).

Almost surely, 2^1009215255 is an apocalyptic number.

1009215255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1009215255 is a deficient number, since it is larger than the sum of its proper divisors (639886569).

1009215255 is a wasteful number, since it uses less digits than its factorization.

1009215255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431566.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1009215255 is about 31768.1484351858. The cubic root of 1009215255 is about 1003.0623640202.

The spelling of 1009215255 in words is "one billion, nine million, two hundred fifteen thousand, two hundred fifty-five".