1557377841 has 16 divisors (see below), whose sum is σ = 2133907328. Its totient is φ = 1009584000.

The previous prime is 1557377813. The next prime is 1557377849. The reversal of 1557377841 is 1487737551.

It is not a de Polignac number, because 1557377841 - 2¹⁵ = 1557345073 is a prime.

It is a super-5 number, since 5×1557377841⁵ (a number of 47 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557377849) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 250116 + ... + 256266.

It is an arithmetic number, because the mean of its divisors is an integer number (133369208).

Almost surely, 2^1557377841 is an apocalyptic number.

It is an amenable number.

1557377841 is a deficient number, since it is larger than the sum of its proper divisors (576529487).

1557377841 is a wasteful number, since it uses less digits than its factorization.

1557377841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8472.

The product of its digits is 823200, while the sum is 48.

The square root of 1557377841 is about 39463.6268100133. The cubic root of 1557377841 is about 1159.1278226443.

The spelling of 1557377841 in words is "one billion, five hundred fifty-seven million, three hundred seventy-seven thousand, eight hundred forty-one".