2250381 has 16 divisors (see below), whose sum is σ = 3466368. Its totient is φ = 1272000.

The previous prime is 2250359. The next prime is 2250397. The reversal of 2250381 is 1830522.

2250381 is a nontrivial binomial coefficient, being equal to C(2122, 2).

It is not a de Polignac number, because 2250381 - 2⁵ = 2250349 is a prime.

It is a super-2 number, since 2×2250381² = 10128429290322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2250181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1591 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (216648).

2^2250381 is an apocalyptic number.

2250381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2250381 is the 2121-st triangular number and also the 1061-st hexagonal number.

It is an amenable number.

2250381 is a deficient number, since it is larger than the sum of its proper divisors (1215987).

2250381 is a wasteful number, since it uses less digits than its factorization.

2250381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2250381 is about 1500.1269946241. The cubic root of 2250381 is about 131.0444656076.

It can be divided in two parts, 22 and 50381, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 2250381 in words is "two million, two hundred fifty thousand, three hundred eighty-one".