2981145 has 16 divisors (see below), whose sum is σ = 4977792. Its totient is φ = 1520640.

The previous prime is 2981123. The next prime is 2981149. The reversal of 2981145 is 5411892.

It is a happy number.

It is not a de Polignac number, because 2981145 - 2¹⁰ = 2980121 is a prime.

It is a super-2 number, since 2×2981145² = 17774451022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2981149) 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 15 ways as a sum of consecutive naturals, for example, 3976 + ... + 4665.

It is an arithmetic number, because the mean of its divisors is an integer number (311112).

2^2981145 is an apocalyptic number.

It is an amenable number.

2981145 is a deficient number, since it is larger than the sum of its proper divisors (1996647).

2981145 is a wasteful number, since it uses less digits than its factorization.

2981145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672.

The product of its digits is 2880, while the sum is 30.

The square root of 2981145 is about 1726.5992586585. The cubic root of 2981145 is about 143.9221705193.

The spelling of 2981145 in words is "two million, nine hundred eighty-one thousand, one hundred forty-five".