2251756 has 18 divisors (see below), whose sum is σ = 4268292. Its totient is φ = 1038960.

The previous prime is 2251741. The next prime is 2251771. The reversal of 2251756 is 6571522.

It is an interprime number because it is at equal distance from previous prime (2251741) and next prime (2251771).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁷ + 2¹⁷ + 5⁵ + 1 + 7⁶ + 5⁹ + 6⁶ .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 990 + ... + 2341.

2^2251756 is an apocalyptic number.

2251756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2251756 is a deficient number, since it is larger than the sum of its proper divisors (2016536).

2251756 is a wasteful number, since it uses less digits than its factorization.

2251756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3346 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 2251756 is about 1500.5852191728. The cubic root of 2251756 is about 131.0711498971.

The spelling of 2251756 in words is "two million, two hundred fifty-one thousand, seven hundred fifty-six".