215122532 has 12 divisors (see below), whose sum is σ = 381621996. Its totient is φ = 106087680.

The previous prime is 215122517. The next prime is 215122543. The reversal of 215122532 is 235221512.

It can be written as a sum of positive squares in 2 ways, for example, as 119552356 + 95570176 = 10934^2 + 9776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215122498 and 215122507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368069 + ... + 368652.

It is an arithmetic number, because the mean of its divisors is an integer number (31801833).

Almost surely, 2^215122532 is an apocalyptic number.

It is an amenable number.

215122532 is a deficient number, since it is larger than the sum of its proper divisors (166499464).

215122532 is a wasteful number, since it uses less digits than its factorization.

215122532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736798 (or 736796 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 215122532 is about 14667.0560099837. The cubic root of 215122532 is about 599.1864269598.

The spelling of 215122532 in words is "two hundred fifteen million, one hundred twenty-two thousand, five hundred thirty-two".