7181145 has 48 divisors (see below), whose sum is σ = 13515840. Its totient is φ = 3514752.

The previous prime is 7181131. The next prime is 7181147. The reversal of 7181145 is 5411817.

It is not a de Polignac number, because 7181145 - 2⁵ = 7181113 is a prime.

It is a super-2 number, since 2×7181145² = 103137687022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7181147) 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 47 ways as a sum of consecutive naturals, for example, 31522 + ... + 31748.

It is an arithmetic number, because the mean of its divisors is an integer number (281580).

Almost surely, 2^7181145 is an apocalyptic number.

It is an amenable number.

7181145 is a deficient number, since it is larger than the sum of its proper divisors (6334695).

7181145 is a wasteful number, since it uses less digits than its factorization.

7181145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 291 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 7181145 is about 2679.7658479800. The cubic root of 7181145 is about 192.9291712142.

The spelling of 7181145 in words is "seven million, one hundred eighty-one thousand, one hundred forty-five".