2215144520 has 32 divisors (see below), whose sum is σ = 4985452800. Its totient is φ = 885812928.

The previous prime is 2215144501. The next prime is 2215144567. The reversal of 2215144520 is 254415122.

It is a self number, because there is not a number n which added to its sum of digits gives 2215144520.

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, 229961 + ... + 239399.

It is an arithmetic number, because the mean of its divisors is an integer number (155795400).

Almost surely, 2^2215144520 is an apocalyptic number.

2215144520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215144520 is an abundant number, since it is smaller than the sum of its proper divisors (2770308280).

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

2215144520 is a wasteful number, since it uses less digits than its factorization.

2215144520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15317 (or 15313 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2215144520 is about 47065.3218410328. The cubic root of 2215144520 is about 1303.5689935799.

Adding to 2215144520 its reverse (254415122), we get a palindrome (2469559642).

The spelling of 2215144520 in words is "two billion, two hundred fifteen million, one hundred forty-four thousand, five hundred twenty".