2551653 has 24 divisors (see below), whose sum is σ = 4025112. Its totient is φ = 1548288.

The previous prime is 2551651. The next prime is 2551657. The reversal of 2551653 is 3561552.

2551653 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 653 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 173889 + 2377764 = 417^2 + 1542^2 .

It is not a de Polignac number, because 2551653 - 2¹ = 2551651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13125 + ... + 13317.

It is an arithmetic number, because the mean of its divisors is an integer number (167713).

2^2551653 is an apocalyptic number.

It is an amenable number.

2551653 is a deficient number, since it is larger than the sum of its proper divisors (1473459).

2551653 is a wasteful number, since it uses less digits than its factorization.

2551653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 322 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 2551653 is about 1597.3894327934. The cubic root of 2551653 is about 136.6492350032.

The spelling of 2551653 in words is "two million, five hundred fifty-one thousand, six hundred fifty-three".