2553606 has 40 divisors (see below), whose sum is σ = 6246504. Its totient is φ = 773280.

The previous prime is 2553601. The next prime is 2553611. The reversal of 2553606 is 6063552.

2553606 is a `hidden beast` number, since 2 + 5 + 53 + 606 = 666.

It is an interprime number because it is at equal distance from previous prime (2553601) and next prime (2553611).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2553606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1066 + ... + 2498.

2^2553606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2553606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3123252).

2553606 is an abundant number, since it is smaller than the sum of its proper divisors (3692898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2553606 is a wasteful number, since it uses less digits than its factorization.

2553606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2553606 is about 1598.0006257821. Note that the first 3 decimals coincide. The cubic root of 2553606 is about 136.6840892588.

The spelling of 2553606 in words is "two million, five hundred fifty-three thousand, six hundred six".