2621855241 has 6 divisors (see below), whose sum is σ = 3787124250. Its totient is φ = 1747903488.

The previous prime is 2621855233. The next prime is 2621855293. The reversal of 2621855241 is 1425581262.

2621855241 is a `hidden beast` number, since 2 + 62 + 1 + 8 + 552 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2621849616 + 5625 = 51204^2 + 75^2 .

It is not a de Polignac number, because 2621855241 - 2³ = 2621855233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2621855196 and 2621855205.

It is not an unprimeable number, because it can be changed into a prime (2621855441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145658616 + ... + 145658633.

It is an arithmetic number, because the mean of its divisors is an integer number (631187375).

Almost surely, 2^2621855241 is an apocalyptic number.

It is an amenable number.

2621855241 is a deficient number, since it is larger than the sum of its proper divisors (1165269009).

2621855241 is a wasteful number, since it uses less digits than its factorization.

2621855241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291317255 (or 291317252 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 2621855241 is about 51204.0549273200. The cubic root of 2621855241 is about 1378.9110012935.

The spelling of 2621855241 in words is "two billion, six hundred twenty-one million, eight hundred fifty-five thousand, two hundred forty-one".