4971145 has 4 divisors (see below), whose sum is σ = 5965380. Its totient is φ = 3976912.

The previous prime is 4971139. The next prime is 4971167. The reversal of 4971145 is 5411794.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1901641 + 3069504 = 1379^2 + 1752^2 .

It is a cyclic number.

It is not a de Polignac number, because 4971145 - 2³ = 4971137 is a prime.

It is a super-2 number, since 2×4971145² = 49424565222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497110 + ... + 497119.

It is an arithmetic number, because the mean of its divisors is an integer number (1491345).

Almost surely, 2^4971145 is an apocalyptic number.

It is an amenable number.

4971145 is a deficient number, since it is larger than the sum of its proper divisors (994235).

4971145 is an equidigital number, since it uses as much as digits as its factorization.

4971145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994234.

The product of its digits is 5040, while the sum is 31.

The square root of 4971145 is about 2229.6064675184. The cubic root of 4971145 is about 170.6680174827.

The spelling of 4971145 in words is "four million, nine hundred seventy-one thousand, one hundred forty-five".