2251776 has 44 divisors (see below), whose sum is σ = 6009992. Its totient is φ = 749568.

The previous prime is 2251771. The next prime is 2251807. The reversal of 2251776 is 6771522.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2706 + ... + 3438.

2^2251776 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 2251776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3004996).

2251776 is an abundant number, since it is smaller than the sum of its proper divisors (3758216).

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

2251776 is an equidigital number, since it uses as much as digits as its factorization.

2251776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 738 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 2251776 is about 1500.5918832247. The cubic root of 2251776 is about 131.0715379521.

The spelling of 2251776 in words is "two million, two hundred fifty-one thousand, seven hundred seventy-six".