3291157 has 4 divisors (see below), whose sum is σ = 3297996. Its totient is φ = 3284320.

The previous prime is 3291143. The next prime is 3291163. The reversal of 3291157 is 7511923.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7511923 = 127 ⋅59149.

It can be written as a sum of positive squares in 2 ways, for example, as 1347921 + 1943236 = 1161^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 3291157 - 2¹⁵ = 3258389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638 + ... + 3679.

It is an arithmetic number, because the mean of its divisors is an integer number (824499).

Almost surely, 2^3291157 is an apocalyptic number.

It is an amenable number.

3291157 is a deficient number, since it is larger than the sum of its proper divisors (6839).

3291157 is an equidigital number, since it uses as much as digits as its factorization.

3291157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6838.

The product of its digits is 1890, while the sum is 28.

The square root of 3291157 is about 1814.1546240605. The cubic root of 3291157 is about 148.7474514075.

The spelling of 3291157 in words is "three million, two hundred ninety-one thousand, one hundred fifty-seven".