2891237 has 2 divisors, whose sum is σ = 2891238. Its totient is φ = 2891236.

The previous prime is 2891233. The next prime is 2891243. The reversal of 2891237 is 7321982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1811716 + 1079521 = 1346^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2891237 - 2² = 2891233 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2891233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445618 + 1445619.

It is an arithmetic number, because the mean of its divisors is an integer number (1445619).

2^2891237 is an apocalyptic number.

It is an amenable number.

2891237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891237 is an equidigital number, since it uses as much as digits as its factorization.

2891237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 2891237 is about 1700.3637846061. The cubic root of 2891237 is about 142.4605328271.

The spelling of 2891237 in words is "two million, eight hundred ninety-one thousand, two hundred thirty-seven".