215051005 has 32 divisors (see below), whose sum is σ = 283852800. Its totient is φ = 155457792.

The previous prime is 215050981. The next prime is 215051033. The reversal of 215051005 is 500150512.

It is a cyclic number.

It is not a de Polignac number, because 215051005 - 2¹¹ = 215048957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 899676 + ... + 899914.

It is an arithmetic number, because the mean of its divisors is an integer number (8870400).

Almost surely, 2^215051005 is an apocalyptic number.

It is an amenable number.

215051005 is a deficient number, since it is larger than the sum of its proper divisors (68801795).

215051005 is a wasteful number, since it uses less digits than its factorization.

215051005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 215051005 is about 14664.6174515396. The cubic root of 215051005 is about 599.1200109223.

The spelling of 215051005 in words is "two hundred fifteen million, fifty-one thousand, five".