2421513506 has 4 divisors (see below), whose sum is σ = 3632270262. Its totient is φ = 1210756752.

The previous prime is 2421513491. The next prime is 2421513511. The reversal of 2421513506 is 6053151242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6053151242 = 2 ⋅3026575621.

It can be written as a sum of positive squares in only one way, i.e., 2416607281 + 4906225 = 49159^2 + 2215^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 605378375 + ... + 605378378.

Almost surely, 2^2421513506 is an apocalyptic number.

2421513506 is a deficient number, since it is larger than the sum of its proper divisors (1210756756).

2421513506 is a wasteful number, since it uses less digits than its factorization.

2421513506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210756755.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2421513506 is about 49208.8762927990. The cubic root of 2421513506 is about 1342.8545196860.

Adding to 2421513506 its reverse (6053151242), we get a palindrome (8474664748).

The spelling of 2421513506 in words is "two billion, four hundred twenty-one million, five hundred thirteen thousand, five hundred six".