1557359085 has 32 divisors (see below), whose sum is σ = 2533386240. Its totient is φ = 816782400.

The previous prime is 1557359051. The next prime is 1557359087. The reversal of 1557359085 is 5809537551.

It is not a de Polignac number, because 1557359085 - 2⁶ = 1557359021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557359087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 465870 + ... + 469200.

It is an arithmetic number, because the mean of its divisors is an integer number (79168320).

Almost surely, 2^1557359085 is an apocalyptic number.

1557359085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1557359085 is a deficient number, since it is larger than the sum of its proper divisors (976027155).

1557359085 is a wasteful number, since it uses less digits than its factorization.

1557359085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 945000, while the sum is 48.

The square root of 1557359085 is about 39463.3891727510. The cubic root of 1557359085 is about 1159.1231693765.

The spelling of 1557359085 in words is "one billion, five hundred fifty-seven million, three hundred fifty-nine thousand, eighty-five".