2900621 has 2 divisors, whose sum is σ = 2900622. Its totient is φ = 2900620.

The previous prime is 2900603. The next prime is 2900629. The reversal of 2900621 is 1260092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 44521 = 1690^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2900621 - 2¹⁰ = 2899597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2900593 and 2900602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2900629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1450310 + 1450311.

It is an arithmetic number, because the mean of its divisors is an integer number (1450311).

2^2900621 is an apocalyptic number.

It is an amenable number.

2900621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2900621 is an equidigital number, since it uses as much as digits as its factorization.

2900621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2900621 is about 1703.1209587108. The cubic root of 2900621 is about 142.6144929854.

The spelling of 2900621 in words is "two million, nine hundred thousand, six hundred twenty-one".