2251333336 has 128 divisors (see below), whose sum is σ = 5200588800. Its totient is φ = 893007360.

The previous prime is 2251333319. The next prime is 2251333363. The reversal of 2251333336 is 6333331522.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 2251333298 and 2251333307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9917655 + ... + 9917881.

It is an arithmetic number, because the mean of its divisors is an integer number (40629600).

Almost surely, 2^2251333336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251333336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600294400).

2251333336 is an abundant number, since it is smaller than the sum of its proper divisors (2949255464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251333336 is a wasteful number, since it uses less digits than its factorization.

2251333336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 493 counting only the distinct ones).

The product of its digits is 29160, while the sum is 31.

The square root of 2251333336 is about 47448.2174164636. The cubic root of 2251333336 is about 1310.6294851663.

Adding to 2251333336 its reverse (6333331522), we get a palindrome (8584664858).

The spelling of 2251333336 in words is "two billion, two hundred fifty-one million, three hundred thirty-three thousand, three hundred thirty-six".