2251630 has 8 divisors (see below), whose sum is σ = 4052952. Its totient is φ = 900648.

The previous prime is 2251603. The next prime is 2251637. The reversal of 2251630 is 361522.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2251598 and 2251607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112572 + ... + 112591.

It is an arithmetic number, because the mean of its divisors is an integer number (506619).

2^2251630 is an apocalyptic number.

2251630 is a deficient number, since it is larger than the sum of its proper divisors (1801322).

2251630 is a wasteful number, since it uses less digits than its factorization.

2251630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225170.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2251630 is about 1500.5432349653. The cubic root of 2251630 is about 131.0687050980.

The spelling of 2251630 in words is "two million, two hundred fifty-one thousand, six hundred thirty".