2516621236 has 12 divisors (see below), whose sum is σ = 4409058528. Its totient is φ = 1256890232.

The previous prime is 2516621213. The next prime is 2516621257. The reversal of 2516621236 is 6321266152.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 351106 + ... + 358201.

It is an arithmetic number, because the mean of its divisors is an integer number (367421544).

Almost surely, 2^2516621236 is an apocalyptic number.

It is an amenable number.

2516621236 is a deficient number, since it is larger than the sum of its proper divisors (1892437292).

2516621236 is a wasteful number, since it uses less digits than its factorization.

2516621236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710198 (or 710196 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 2516621236 is about 50165.9370090901. The cubic root of 2516621236 is about 1360.2099654199.

Adding to 2516621236 its reverse (6321266152), we get a palindrome (8837887388).

The spelling of 2516621236 in words is "two billion, five hundred sixteen million, six hundred twenty-one thousand, two hundred thirty-six".