2548621 has 2 divisors, whose sum is σ = 2548622. Its totient is φ = 2548620.

The previous prime is 2548591. The next prime is 2548627. The reversal of 2548621 is 1268452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 343396 = 1485^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2548621 - 2⁷ = 2548493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2548621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2548627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274310 + 1274311.

It is an arithmetic number, because the mean of its divisors is an integer number (1274311).

2^2548621 is an apocalyptic number.

It is an amenable number.

2548621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2548621 is an equidigital number, since it uses as much as digits as its factorization.

2548621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 2548621 is about 1596.4401022275. The cubic root of 2548621 is about 136.5950890967.

The spelling of 2548621 in words is "two million, five hundred forty-eight thousand, six hundred twenty-one".