2651216 has 10 divisors (see below), whose sum is σ = 5136762. Its totient is φ = 1325600.

The previous prime is 2651197. The next prime is 2651237. The reversal of 2651216 is 6121562.

It can be written as a sum of positive squares in only one way, i.e., 2572816 + 78400 = 1604^2 + 280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2651191 and 2651200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82835 + ... + 82866.

2^2651216 is an apocalyptic number.

It is an amenable number.

2651216 is a deficient number, since it is larger than the sum of its proper divisors (2485546).

2651216 is a wasteful number, since it uses less digits than its factorization.

2651216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165709 (or 165703 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 2651216 is about 1628.2555082050. The cubic root of 2651216 is about 138.4039135962.

Adding to 2651216 its reverse (6121562), we get a palindrome (8772778).

The spelling of 2651216 in words is "two million, six hundred fifty-one thousand, two hundred sixteen".