2661455 has 8 divisors (see below), whose sum is σ = 3203232. Its totient is φ = 2122848.

The previous prime is 2661427. The next prime is 2661457. The reversal of 2661455 is 5541662.

2661455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2661455 - 2⁶ = 2661391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661457) 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 7 ways as a sum of consecutive naturals, for example, 1889 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (400404).

2^2661455 is an apocalyptic number.

2661455 is a deficient number, since it is larger than the sum of its proper divisors (541777).

2661455 is a wasteful number, since it uses less digits than its factorization.

2661455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its digits is 7200, while the sum is 29.

The square root of 2661455 is about 1631.3966409184. The cubic root of 2661455 is about 138.5818567579.

The spelling of 2661455 in words is "two million, six hundred sixty-one thousand, four hundred fifty-five".