2405161 has 4 divisors (see below), whose sum is σ = 2623824. Its totient is φ = 2186500.

The previous prime is 2405149. The next prime is 2405171. The reversal of 2405161 is 1615042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2405161 - 2¹³ = 2396969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2405141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109315 + ... + 109336.

It is an arithmetic number, because the mean of its divisors is an integer number (655956).

2^2405161 is an apocalyptic number.

It is an amenable number.

2405161 is a deficient number, since it is larger than the sum of its proper divisors (218663).

2405161 is a wasteful number, since it uses less digits than its factorization.

2405161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218662.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2405161 is about 1550.8581495417. The cubic root of 2405161 is about 133.9824919577.

The spelling of 2405161 in words is "two million, four hundred five thousand, one hundred sixty-one".