2971157 has 4 divisors (see below), whose sum is σ = 3395616. Its totient is φ = 2546700.

The previous prime is 2971139. The next prime is 2971159. The reversal of 2971157 is 7511792.

2971157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2971157 - 2⁶ = 2971093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212219 + ... + 212232.

It is an arithmetic number, because the mean of its divisors is an integer number (848904).

2^2971157 is an apocalyptic number.

It is an amenable number.

2971157 is a deficient number, since it is larger than the sum of its proper divisors (424459).

2971157 is an equidigital number, since it uses as much as digits as its factorization.

2971157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424458.

The product of its digits is 4410, while the sum is 32.

The square root of 2971157 is about 1723.7044410223. The cubic root of 2971157 is about 143.7612588535.

The spelling of 2971157 in words is "two million, nine hundred seventy-one thousand, one hundred fifty-seven".