3145897 has 2 divisors, whose sum is σ = 3145898. Its totient is φ = 3145896.

The previous prime is 3145873. The next prime is 3145903. The reversal of 3145897 is 7985413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2399401 + 746496 = 1549^2 + 864^2 .

It is an emirp because it is prime and its reverse (7985413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3145897 - 2¹⁵ = 3113129 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3³ + 1 + 4¹⁰ + 5³ + 8⁷ + 9 + 7 .

3145897 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3145817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572948 + 1572949.

It is an arithmetic number, because the mean of its divisors is an integer number (1572949).

Almost surely, 2^3145897 is an apocalyptic number.

It is an amenable number.

3145897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145897 is an equidigital number, since it uses as much as digits as its factorization.

3145897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 3145897 is about 1773.6676689842. The cubic root of 3145897 is about 146.5260469244.

The spelling of 3145897 in words is "three million, one hundred forty-five thousand, eight hundred ninety-seven".