2615971 has 2 divisors, whose sum is σ = 2615972. Its totient is φ = 2615970.

The previous prime is 2615969. The next prime is 2615981. The reversal of 2615971 is 1795162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2615971 - 2¹ = 2615969 is a prime.

Together with 2615969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2615981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307985 + 1307986.

It is an arithmetic number, because the mean of its divisors is an integer number (1307986).

2^2615971 is an apocalyptic number.

2615971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615971 is an equidigital number, since it uses as much as digits as its factorization.

2615971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 2615971 is about 1617.3963645316. The cubic root of 2615971 is about 137.7878663316.

The spelling of 2615971 in words is "two million, six hundred fifteen thousand, nine hundred seventy-one".