215152566 has 32 divisors (see below), whose sum is σ = 448588800. Its totient is φ = 68708640.

The previous prime is 215152559. The next prime is 215152571. The reversal of 215152566 is 665251512.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18075 + ... + 27513.

It is an arithmetic number, because the mean of its divisors is an integer number (14018400).

Almost surely, 2^215152566 is an apocalyptic number.

215152566 is an abundant number, since it is smaller than the sum of its proper divisors (233436234).

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

215152566 is a wasteful number, since it uses less digits than its factorization.

215152566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604.

The product of its digits is 18000, while the sum is 33.

The square root of 215152566 is about 14668.0798334342. The cubic root of 215152566 is about 599.2143104913.

The spelling of 215152566 in words is "two hundred fifteen million, one hundred fifty-two thousand, five hundred sixty-six".