1601215 has 16 divisors (see below), whose sum is σ = 2396160. Its totient is φ = 997920.

The previous prime is 1601209. The next prime is 1601219. The reversal of 1601215 is 5121061.

It is a happy number.

It is not a de Polignac number, because 1601215 - 2³ = 1601207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601219) 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, 1695 + ... + 2464.

It is an arithmetic number, because the mean of its divisors is an integer number (149760).

2^1601215 is an apocalyptic number.

1601215 is a deficient number, since it is larger than the sum of its proper divisors (794945).

1601215 is a wasteful number, since it uses less digits than its factorization.

1601215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1601215 is about 1265.3912438452. The cubic root of 1601215 is about 116.9903077173.

Subtracting from 1601215 its product of nonzero digits (60), we obtain a triangular number (1601155 = T₁₇₈₉).

Adding to 1601215 its reverse (5121061), we get a palindrome (6722276).

The spelling of 1601215 in words is "one million, six hundred one thousand, two hundred fifteen".