2231445 has 8 divisors (see below), whose sum is σ = 3570336. Its totient is φ = 1190096.

The previous prime is 2231431. The next prime is 2231447. The reversal of 2231445 is 5441322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2231445 - 2⁴ = 2231429 is a prime.

It is a super-3 number, since 3×2231445³ = 33333415480213338375, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 3⁷ + 1 + 4 + 4⁵ + 5 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74367 + ... + 74396.

It is an arithmetic number, because the mean of its divisors is an integer number (446292).

2^2231445 is an apocalyptic number.

It is an amenable number.

2231445 is a deficient number, since it is larger than the sum of its proper divisors (1338891).

2231445 is a wasteful number, since it uses less digits than its factorization.

2231445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148771.

The product of its digits is 960, while the sum is 21.

The square root of 2231445 is about 1493.8021957408. The cubic root of 2231445 is about 130.6758686367.

Adding to 2231445 its reverse (5441322), we get a palindrome (7672767).

The spelling of 2231445 in words is "two million, two hundred thirty-one thousand, four hundred forty-five".