2541620 has 12 divisors (see below), whose sum is σ = 5337444. Its totient is φ = 1016640.

The previous prime is 2541613. The next prime is 2541677. The reversal of 2541620 is 261452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 872356 + 1669264 = 934^2 + 1292^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 127081 = 2541620 / (2 + 5 + 4 + 1 + 6 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2541592 and 2541601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63521 + ... + 63560.

It is an arithmetic number, because the mean of its divisors is an integer number (444787).

2^2541620 is an apocalyptic number.

2541620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2541620 is an abundant number, since it is smaller than the sum of its proper divisors (2795824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2541620 is a wasteful number, since it uses less digits than its factorization.

2541620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127090 (or 127088 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2541620 is about 1594.2459032408. The cubic root of 2541620 is about 136.4698999318.

The spelling of 2541620 in words is "two million, five hundred forty-one thousand, six hundred twenty".