1557055 has 8 divisors (see below), whose sum is σ = 1890000. Its totient is φ = 1231296.

The previous prime is 1557053. The next prime is 1557067. The reversal of 1557055 is 5507551.

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 1557055 - 2¹ = 1557053 is a prime.

1557055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557053) 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 7 ways as a sum of consecutive naturals, for example, 1305 + ... + 2194.

It is an arithmetic number, because the mean of its divisors is an integer number (236250).

2^1557055 is an apocalyptic number.

1557055 is a deficient number, since it is larger than the sum of its proper divisors (332945).

1557055 is an equidigital number, since it uses as much as digits as its factorization.

1557055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 1557055 is about 1247.8200992130. The cubic root of 1557055 is about 115.9047722227.

It can be divided in two parts, 15570 and 55, that added together give a 6-th power (15625 = 5⁶).

The spelling of 1557055 in words is "one million, five hundred fifty-seven thousand, fifty-five".