215201530 has 16 divisors (see below), whose sum is σ = 392267520. Its totient is φ = 84990672.

The previous prime is 215201527. The next prime is 215201533. The reversal of 215201530 is 35102512.

215201530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (215201527) and next prime (215201533).

It is a junction number, because it is equal to n+sod(n) for n = 215201498 and 215201507.

It is not an unprimeable number, because it can be changed into a prime (215201533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135414 + ... + 136993.

It is an arithmetic number, because the mean of its divisors is an integer number (24516720).

Almost surely, 2^215201530 is an apocalyptic number.

215201530 is a deficient number, since it is larger than the sum of its proper divisors (177065990).

215201530 is a wasteful number, since it uses less digits than its factorization.

215201530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272493.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 215201530 is about 14669.7488049387. The cubic root of 215201530 is about 599.2597630503.

The spelling of 215201530 in words is "two hundred fifteen million, two hundred one thousand, five hundred thirty".