2251356 has 24 divisors (see below), whose sum is σ = 5289984. Its totient is φ = 745200.

The previous prime is 2251349. The next prime is 2251369. The reversal of 2251356 is 6531522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (220416).

2^2251356 is an apocalyptic number.

It is an amenable number.

2251356 is an abundant number, since it is smaller than the sum of its proper divisors (3038628).

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

2251356 is a wasteful number, since it uses less digits than its factorization.

2251356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1319 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 2251356 is about 1500.4519319192. The cubic root of 2251356 is about 131.0633883154.

Adding to 2251356 its reverse (6531522), we get a palindrome (8782878).

The spelling of 2251356 in words is "two million, two hundred fifty-one thousand, three hundred fifty-six".