7905161 has 8 divisors (see below), whose sum is σ = 8857344. Its totient is φ = 6991920.

The previous prime is 7905151. The next prime is 7905167. The reversal of 7905161 is 1615097.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7905161 - 2¹⁸ = 7643017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7905167) 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 7 ways as a sum of consecutive naturals, for example, 9305 + ... + 10118.

It is an arithmetic number, because the mean of its divisors is an integer number (1107168).

Almost surely, 2^7905161 is an apocalyptic number.

It is an amenable number.

7905161 is a deficient number, since it is larger than the sum of its proper divisors (952183).

7905161 is a wasteful number, since it uses less digits than its factorization.

7905161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19471.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 7905161 is about 2811.6118153116. The cubic root of 7905161 is about 199.2065311993.

Subtracting from 7905161 its reverse (1615097), we obtain a square (6290064 = 2508²).

The spelling of 7905161 in words is "seven million, nine hundred five thousand, one hundred sixty-one".