2916521 has 2 divisors, whose sum is σ = 2916522. Its totient is φ = 2916520.

The previous prime is 2916509. The next prime is 2916523. The reversal of 2916521 is 1256192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1792921 + 1123600 = 1339^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2916521 - 2⁶ = 2916457 is a prime.

Together with 2916523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2916523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1458260 + 1458261.

It is an arithmetic number, because the mean of its divisors is an integer number (1458261).

2^2916521 is an apocalyptic number.

It is an amenable number.

2916521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2916521 is an equidigital number, since it uses as much as digits as its factorization.

2916521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

The square root of 2916521 is about 1707.7824802943. The cubic root of 2916521 is about 142.8746027707.

The spelling of 2916521 in words is "two million, nine hundred sixteen thousand, five hundred twenty-one".