215103530 has 16 divisors (see below), whose sum is σ = 387373320. Its totient is φ = 85999872.

The previous prime is 215103509. The next prime is 215103571. The reversal of 215103530 is 35301512.

It can be written as a sum of positive squares in 4 ways, for example, as 172475689 + 42627841 = 13133^2 + 6529^2 .

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, 24806 + ... + 32334.

Almost surely, 2^215103530 is an apocalyptic number.

215103530 is a deficient number, since it is larger than the sum of its proper divisors (172269790).

215103530 is a wasteful number, since it uses less digits than its factorization.

215103530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10393.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 215103530 is about 14666.4082174198. The cubic root of 215103530 is about 599.1687841841.

The spelling of 215103530 in words is "two hundred fifteen million, one hundred three thousand, five hundred thirty".