2421055515 has 16 divisors (see below), whose sum is σ = 3998647296. Its totient is φ = 1249576800.

The previous prime is 2421055513. The next prime is 2421055523. The reversal of 2421055515 is 5155501242.

It is not a de Polignac number, because 2421055515 - 2¹ = 2421055513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421055513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2602821 + ... + 2603750.

It is an arithmetic number, because the mean of its divisors is an integer number (249915456).

Almost surely, 2^2421055515 is an apocalyptic number.

2421055515 is a deficient number, since it is larger than the sum of its proper divisors (1577591781).

2421055515 is a wasteful number, since it uses less digits than its factorization.

2421055515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206610.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2421055515 is about 49204.2225322177. Note that the first 3 decimals coincide. The cubic root of 2421055515 is about 1342.7698544466.

Adding to 2421055515 its reverse (5155501242), we get a palindrome (7576556757).

The spelling of 2421055515 in words is "two billion, four hundred twenty-one million, fifty-five thousand, five hundred fifteen".