2971145 has 8 divisors (see below), whose sum is σ = 3575880. Its totient is φ = 2369920.

The previous prime is 2971139. The next prime is 2971159. The reversal of 2971145 is 5411792.

It can be written as a sum of positive squares in 4 ways, for example, as 446224 + 2524921 = 668^2 + 1589^2 .

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

It is not a de Polignac number, because 2971145 - 2⁶ = 2971081 is a prime.

It is a super-2 number, since 2×2971145² = 17655405222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661 + ... + 2949.

It is an arithmetic number, because the mean of its divisors is an integer number (446985).

2^2971145 is an apocalyptic number.

It is an amenable number.

2971145 is a deficient number, since it is larger than the sum of its proper divisors (604735).

2971145 is a wasteful number, since it uses less digits than its factorization.

2971145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755.

The product of its digits is 2520, while the sum is 29.

The square root of 2971145 is about 1723.7009601436. The cubic root of 2971145 is about 143.7610653108.

The spelling of 2971145 in words is "two million, nine hundred seventy-one thousand, one hundred forty-five".