2612921 has 2 divisors, whose sum is σ = 2612922. Its totient is φ = 2612920.

The previous prime is 2612893. The next prime is 2612927. The reversal of 2612921 is 1292162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2325625 + 287296 = 1525^2 + 536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2612921 is a prime.

It is a Chen prime.

It is equal to p₁₉₀₇₃₃ and since 2612921 and 190733 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2612927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1306460 + 1306461.

It is an arithmetic number, because the mean of its divisors is an integer number (1306461).

2^2612921 is an apocalyptic number.

It is an amenable number.

2612921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2612921 is an equidigital number, since it uses as much as digits as its factorization.

2612921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 2612921 is about 1616.4532161495. The cubic root of 2612921 is about 137.7342958570.

The spelling of 2612921 in words is "two million, six hundred twelve thousand, nine hundred twenty-one".