2653651 has 24 divisors (see below), whose sum is σ = 3604832. Its totient is φ = 1900800.

The previous prime is 2653633. The next prime is 2653681. The reversal of 2653651 is 1563562.

2653651 = T₁₄₆ + T₁₄₇ + ... + T₂₆₆.

It is not a de Polignac number, because 2653651 - 2⁵ = 2653619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2653601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10891 + ... + 11131.

2^2653651 is an apocalyptic number.

2653651 is a deficient number, since it is larger than the sum of its proper divisors (951181).

2653651 is a wasteful number, since it uses less digits than its factorization.

2653651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 272 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 2653651 is about 1629.0030693648. The cubic root of 2653651 is about 138.4462728263.

It can be divided in two parts, 265 and 3651, that added together give a triangular number (3916 = T₈₈).

The spelling of 2653651 in words is "two million, six hundred fifty-three thousand, six hundred fifty-one".