7957161 has 6 divisors (see below), whose sum is σ = 11493690. Its totient is φ = 5304768.

The previous prime is 7957151. The next prime is 7957177. The reversal of 7957161 is 1617597.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 4761 = 2820^2 + 69^2 .

It is not a de Polignac number, because 7957161 - 2⁵ = 7957129 is a prime.

It is a super-2 number, since 2×7957161² = 126632822359842, which contains 22 as substring.

7957161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7957151) 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 5 ways as a sum of consecutive naturals, for example, 442056 + ... + 442073.

It is an arithmetic number, because the mean of its divisors is an integer number (1915615).

Almost surely, 2^7957161 is an apocalyptic number.

It is an amenable number.

7957161 is a deficient number, since it is larger than the sum of its proper divisors (3536529).

7957161 is a wasteful number, since it uses less digits than its factorization.

7957161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884135 (or 884132 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 7957161 is about 2820.8440226287. The cubic root of 7957161 is about 199.6423692156.

It can be divided in two parts, 7957 and 161, that added together give a palindrome (8118).

The spelling of 7957161 in words is "seven million, nine hundred fifty-seven thousand, one hundred sixty-one".