7161121 has 8 divisors (see below), whose sum is σ = 7833600. Its totient is φ = 6492240.

The previous prime is 7161109. The next prime is 7161137. The reversal of 7161121 is 1211617.

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 7161121 - 2¹¹ = 7159073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7161151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4960 + ... + 6238.

It is an arithmetic number, because the mean of its divisors is an integer number (979200).

Almost surely, 2^7161121 is an apocalyptic number.

It is an amenable number.

7161121 is a deficient number, since it is larger than the sum of its proper divisors (672479).

7161121 is a wasteful number, since it uses less digits than its factorization.

7161121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799.

The product of its digits is 84, while the sum is 19.

The square root of 7161121 is about 2676.0270925385. The cubic root of 7161121 is about 192.7496821939.

Adding to 7161121 its reverse (1211617), we get a palindrome (8372738).

The spelling of 7161121 in words is "seven million, one hundred sixty-one thousand, one hundred twenty-one".