2651601 has 16 divisors (see below), whose sum is σ = 3741696. Its totient is φ = 1666896.

The previous prime is 2651581. The next prime is 2651603. The reversal of 2651601 is 1061562.

It is a happy number.

2651601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2651601 - 2⁵ = 2651569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5496 + ... + 5958.

It is an arithmetic number, because the mean of its divisors is an integer number (233856).

2^2651601 is an apocalyptic number.

It is an amenable number.

2651601 is a deficient number, since it is larger than the sum of its proper divisors (1090095).

2651601 is a wasteful number, since it uses less digits than its factorization.

2651601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2651601 is about 1628.3737286016. The cubic root of 2651601 is about 138.4106127772.

The spelling of 2651601 in words is "two million, six hundred fifty-one thousand, six hundred one".