2405601 has 27 divisors (see below), whose sum is σ = 3902353.
Its totient is φ = 1426920.
The previous prime is 2405591. The next prime is 2405621. The reversal of 2405601 is 1065042.
It is a happy number.
The square root of 2405601 is 1551.
It is a perfect power (a square), and thus also a powerful number.
It is not a de Polignac number, because 2405601 - 29 = 2405089 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2405621) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 51160 + ... + 51206.
22405601 is an apocalyptic number.
2405601 is the 1551-st square number.
2405601 is the 776-th centered octagonal number.
It is an amenable number.
2405601 is a deficient number, since it is larger than the sum of its proper divisors (1496752).
2405601 is a wasteful number, since it uses less digits than its factorization.
2405601 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 122 (or 61 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
The cubic root of 2405601 is about 133.9906617091.
The spelling of 2405601 in words is "two million, four hundred five thousand, six hundred one".