2215475540 has 24 divisors (see below), whose sum is σ = 4716234600. Its totient is φ = 874050048.

The previous prime is 2215475539. The next prime is 2215475567. The reversal of 2215475540 is 455745122.

It can be written as a sum of positive squares in 4 ways, for example, as 67338436 + 2148137104 = 8206^2 + 46348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2215475540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757265 + ... + 760184.

It is an arithmetic number, because the mean of its divisors is an integer number (196509775).

Almost surely, 2^2215475540 is an apocalyptic number.

2215475540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215475540 is an abundant number, since it is smaller than the sum of its proper divisors (2500759060).

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

2215475540 is a wasteful number, since it uses less digits than its factorization.

2215475540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517531 (or 1517529 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 2215475540 is about 47068.8383115624. The cubic root of 2215475540 is about 1303.6339232661.

The spelling of 2215475540 in words is "two billion, two hundred fifteen million, four hundred seventy-five thousand, five hundred forty".