2251624 has 16 divisors (see below), whose sum is σ = 4273920. Its totient is φ = 1111920.

The previous prime is 2251603. The next prime is 2251637. The reversal of 2251624 is 4261522.

It is a d-powerful number, because it can be written as 2 + 2⁷ + 5⁹ + 1 + 6⁷ + 2¹¹ + 4⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 2251595 and 2251604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032 + ... + 2359.

It is an arithmetic number, because the mean of its divisors is an integer number (267120).

2^2251624 is an apocalyptic number.

It is an amenable number.

2251624 is a deficient number, since it is larger than the sum of its proper divisors (2022296).

2251624 is a wasteful number, since it uses less digits than its factorization.

2251624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3476 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 2251624 is about 1500.5412356880. The cubic root of 2251624 is about 131.0685886768.

It can be divided in two parts, 225 and 1624, that added together give a square (1849 = 43²).

The spelling of 2251624 in words is "two million, two hundred fifty-one thousand, six hundred twenty-four".