1557141 has 8 divisors (see below), whose sum is σ = 2097984. Its totient is φ = 1027200.

The previous prime is 1557137. The next prime is 1557151. The reversal of 1557141 is 1417551.

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

It is not a de Polignac number, because 1557141 - 2² = 1557137 is a prime.

It is a Curzon number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557131) 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, 2385 + ... + 2966.

It is an arithmetic number, because the mean of its divisors is an integer number (262248).

2^1557141 is an apocalyptic number.

It is an amenable number.

1557141 is a deficient number, since it is larger than the sum of its proper divisors (540843).

1557141 is an equidigital number, since it uses as much as digits as its factorization.

1557141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5451.

The product of its digits is 700, while the sum is 24.

The square root of 1557141 is about 1247.8545588329. The cubic root of 1557141 is about 115.9069060858.

The spelling of 1557141 in words is "one million, five hundred fifty-seven thousand, one hundred forty-one".