4015601 has 4 divisors (see below), whose sum is σ = 4154100. Its totient is φ = 3877104.

The previous prime is 4015579. The next prime is 4015619. The reversal of 4015601 is 1065104.

It is a happy number.

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 1825201 + 2190400 = 1351^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 4015601 - 2⁶ = 4015537 is a prime.

It is a super-2 number, since 2×4015601² = 32250102782402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4015601.

It is not an unprimeable number, because it can be changed into a prime (4015201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69206 + ... + 69263.

It is an arithmetic number, because the mean of its divisors is an integer number (1038525).

Almost surely, 2^4015601 is an apocalyptic number.

It is an amenable number.

4015601 is a deficient number, since it is larger than the sum of its proper divisors (138499).

4015601 is a wasteful number, since it uses less digits than its factorization.

4015601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138498.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 4015601 is about 2003.8964544108. The cubic root of 4015601 is about 158.9462128366.

The spelling of 4015601 in words is "four million, fifteen thousand, six hundred one".