1601115 has 16 divisors (see below), whose sum is σ = 2580768. Its totient is φ = 847616.

The previous prime is 1601113. The next prime is 1601123. The reversal of 1601115 is 5111061.

It is a cyclic number.

It is not a de Polignac number, because 1601115 - 2¹ = 1601113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1601094 and 1601103.

It is not an unprimeable number, because it can be changed into a prime (1601113) 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, 2287 + ... + 2903.

It is an arithmetic number, because the mean of its divisors is an integer number (161298).

2^1601115 is an apocalyptic number.

1601115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1601115 is a deficient number, since it is larger than the sum of its proper divisors (979653).

1601115 is a wasteful number, since it uses less digits than its factorization.

1601115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1601115 is about 1265.3517297574. The cubic root of 1601115 is about 116.9878722180.

Adding to 1601115 its reverse (5111061), we get a palindrome (6712176).

It can be divided in two parts, 160 and 1115, that added together give a triangular number (1275 = T₅₀).

The spelling of 1601115 in words is "one million, six hundred one thousand, one hundred fifteen".