2251442 has 6 divisors (see below), whose sum is σ = 3380349.
Its totient is φ = 1124660.
The previous prime is 2251427. The next prime is 2251451. The reversal of 2251442 is 2441522.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 2193361 + 58081 = 1481^2 + 241^2
It is an ABA number since it can be written as A⋅BA, here for A=2, B=1061.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1592 + ... + 2652.
22251442 is an apocalyptic number.
2251442 is a deficient number, since it is larger than the sum of its proper divisors (1128907).
2251442 is an frugal number, since it uses more digits than its factorization.
2251442 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2124 (or 1063 counting only the distinct ones).
The product of its digits is 640, while the sum is 20.
The square root of 2251442 is about 1500.4805896779.
The cubic root of 2251442 is about 131.0650571330.
Adding to 2251442 its reverse (2441522), we get a palindrome (4692964).
The spelling of 2251442 in words is "two million, two hundred fifty-one thousand, four hundred forty-two".