219540601 has 16 divisors (see below), whose sum is σ = 266886144. Its totient is φ = 176292864.

The previous prime is 219540599. The next prime is 219540613. The reversal of 219540601 is 106045912.

It is a cyclic number.

It is not a de Polignac number, because 219540601 - 2¹ = 219540599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 219540601.

It is not an unprimeable number, because it can be changed into a prime (219540001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22401 + ... + 30673.

It is an arithmetic number, because the mean of its divisors is an integer number (16680384).

Almost surely, 2^219540601 is an apocalyptic number.

It is an amenable number.

219540601 is a deficient number, since it is larger than the sum of its proper divisors (47345543).

219540601 is a wasteful number, since it uses less digits than its factorization.

219540601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 219540601 is about 14816.9025440542. The cubic root of 219540601 is about 603.2605831582.

The spelling of 219540601 in words is "two hundred nineteen million, five hundred forty thousand, six hundred one".