2949521 has 2 divisors, whose sum is σ = 2949522. Its totient is φ = 2949520.

The previous prime is 2949511. The next prime is 2949523. The reversal of 2949521 is 1259492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2768896 + 180625 = 1664^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2949521 is a prime.

It is a Sophie Germain prime.

Together with 2949523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2949523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1474760 + 1474761.

It is an arithmetic number, because the mean of its divisors is an integer number (1474761).

2^2949521 is an apocalyptic number.

It is an amenable number.

2949521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2949521 is an equidigital number, since it uses as much as digits as its factorization.

2949521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 2949521 is about 1717.4169557798. The cubic root of 2949521 is about 143.4114513179.

The spelling of 2949521 in words is "two million, nine hundred forty-nine thousand, five hundred twenty-one".