1591560 has 48 divisors (see below), whose sum is σ = 5173740. Its totient is φ = 424320.

The previous prime is 1591553. The next prime is 1591567. The reversal of 1591560 is 651951.

1591560 is a `hidden beast` number, since 15 + 91 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (1591553) and next prime (1591567).

It can be written as a sum of positive squares in 2 ways, for example, as 1572516 + 19044 = 1254^2 + 138^2 .

It is not an unprimeable number, because it can be changed into a prime (1591567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1851 + ... + 2570.

2^1591560 is an apocalyptic number.

1591560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1591560 is an abundant number, since it is smaller than the sum of its proper divisors (3582180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1591560 is a wasteful number, since it uses less digits than its factorization.

1591560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438 (or 4431 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 1591560 is about 1261.5704498759. The cubic root of 1591560 is about 116.7546909391.

The spelling of 1591560 in words is "one million, five hundred ninety-one thousand, five hundred sixty".