215513061 has 8 divisors (see below), whose sum is σ = 292061664. Its totient is φ = 141319920.

The previous prime is 215513047. The next prime is 215513083. The reversal of 215513061 is 160315512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215513061 - 2¹¹ = 215511013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215513041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 588651 + ... + 589016.

It is an arithmetic number, because the mean of its divisors is an integer number (36507708).

Almost surely, 2^215513061 is an apocalyptic number.

It is an amenable number.

215513061 is a deficient number, since it is larger than the sum of its proper divisors (76548603).

215513061 is a wasteful number, since it uses less digits than its factorization.

215513061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177731.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 215513061 is about 14680.3631085883. The cubic root of 215513061 is about 599.5487913252.

Adding to 215513061 its reverse (160315512), we get a palindrome (375828573).

The spelling of 215513061 in words is "two hundred fifteen million, five hundred thirteen thousand, sixty-one".