1540055 has 8 divisors (see below), whose sum is σ = 2016144. Its totient is φ = 1120000.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540055 is 5500451.

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

It is not a de Polignac number, because 1540055 - 2⁴ = 1540039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13946 + ... + 14055.

It is an arithmetic number, because the mean of its divisors is an integer number (252018).

2^1540055 is an apocalyptic number.

1540055 is a deficient number, since it is larger than the sum of its proper divisors (476089).

1540055 is a wasteful number, since it uses less digits than its factorization.

1540055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28017.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1540055 is about 1240.9895245327. The cubic root of 1540055 is about 115.4814097751.

The spelling of 1540055 in words is "one million, five hundred forty thousand, fifty-five".