2653551 has 12 divisors (see below), whose sum is σ = 3905928. Its totient is φ = 1735344.

The previous prime is 2653549. The next prime is 2653571. The reversal of 2653551 is 1553562.

2653551 is a `hidden beast` number, since 2 + 653 + 5 + 5 + 1 = 666.

It is not a de Polignac number, because 2653551 - 2¹ = 2653549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2305 + ... + 3258.

It is an arithmetic number, because the mean of its divisors is an integer number (325494).

2^2653551 is an apocalyptic number.

2653551 is a deficient number, since it is larger than the sum of its proper divisors (1252377).

2653551 is a wasteful number, since it uses less digits than its factorization.

2653551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622 (or 5619 counting only the distinct ones).

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

The square root of 2653551 is about 1628.9723754564. The cubic root of 2653551 is about 138.4445337379. Note that the first 3 decimals are identical.

It can be divided in two parts, 265355 and 1, that added together give a triangular number (265356 = T₇₂₈).

The spelling of 2653551 in words is "two million, six hundred fifty-three thousand, five hundred fifty-one".