2139455 has 8 divisors (see below), whose sum is σ = 2576400. Its totient is φ = 1705536.

The previous prime is 2139427. The next prime is 2139461. The reversal of 2139455 is 5549312.

2139455 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 2139455 - 2⁸ = 2139199 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 3¹¹ + 9³ + 4⁴ + 5 + 5⁹ .

It is a congruent number.

It is an unprimeable number.

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, 1331 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (322050).

2^2139455 is an apocalyptic number.

2139455 is a deficient number, since it is larger than the sum of its proper divisors (436945).

2139455 is a wasteful number, since it uses less digits than its factorization.

2139455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its digits is 5400, while the sum is 29.

The square root of 2139455 is about 1462.6875948062. The cubic root of 2139455 is about 128.8549337769.

The spelling of 2139455 in words is "two million, one hundred thirty-nine thousand, four hundred fifty-five".