2506040621 has 16 divisors (see below), whose sum is σ = 2877493248. Its totient is φ = 2137977600.

The previous prime is 2506040609. The next prime is 2506040623. The reversal of 2506040621 is 1260406052.

It is a cyclic number.

It is not a de Polignac number, because 2506040621 - 2²² = 2501846317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506040623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2361431 + ... + 2362491.

It is an arithmetic number, because the mean of its divisors is an integer number (179843328).

Almost surely, 2^2506040621 is an apocalyptic number.

It is an amenable number.

2506040621 is a deficient number, since it is larger than the sum of its proper divisors (371452627).

2506040621 is a wasteful number, since it uses less digits than its factorization.

2506040621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2506040621 is about 50060.3697649148. The cubic root of 2506040621 is about 1358.3010469331.

Adding to 2506040621 its reverse (1260406052), we get a palindrome (3766446673).

The spelling of 2506040621 in words is "two billion, five hundred six million, forty thousand, six hundred twenty-one".