2215015530 has 256 divisors, whose sum is σ = 6815563776. Its totient is φ = 448312320.

The previous prime is 2215015507. The next prime is 2215015531. The reversal of 2215015530 is 355105122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2215015530.

It is not an unprimeable number, because it can be changed into a prime (2215015531) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7826769 + ... + 7827051.

It is an arithmetic number, because the mean of its divisors is an integer number (26623296).

Almost surely, 2^2215015530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215015530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407781888).

2215015530 is an abundant number, since it is smaller than the sum of its proper divisors (4600548246).

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

2215015530 is a wasteful number, since it uses less digits than its factorization.

2215015530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2215015530 is about 47063.9514915609. The cubic root of 2215015530 is about 1303.5436903958.

The spelling of 2215015530 in words is "two billion, two hundred fifteen million, fifteen thousand, five hundred thirty".