215496601 has 4 divisors (see below), whose sum is σ = 215539252. Its totient is φ = 215453952.

The previous prime is 215496587. The next prime is 215496623. The reversal of 215496601 is 106694512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110229001 + 105267600 = 10499^2 + 10260^2 .

It is a cyclic number.

It is not a de Polignac number, because 215496601 - 2⁹ = 215496089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215496691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12540 + ... + 24253.

It is an arithmetic number, because the mean of its divisors is an integer number (53884813).

Almost surely, 2^215496601 is an apocalyptic number.

It is an amenable number.

215496601 is a deficient number, since it is larger than the sum of its proper divisors (42651).

215496601 is an equidigital number, since it uses as much as digits as its factorization.

215496601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42650.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 215496601 is about 14679.8024850473. The cubic root of 215496601 is about 599.5335272474.

The spelling of 215496601 in words is "two hundred fifteen million, four hundred ninety-six thousand, six hundred one".