1157560 has 32 divisors (see below), whose sum is σ = 2669040. Its totient is φ = 451584.

The previous prime is 1157557. The next prime is 1157579. The reversal of 1157560 is 657511.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384 + ... + 2056.

2^1157560 is an apocalyptic number.

1157560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1157560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334520).

1157560 is an abundant number, since it is smaller than the sum of its proper divisors (1511480).

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

1157560 is a wasteful number, since it uses less digits than its factorization.

1157560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1157560 is about 1075.8996235709. The cubic root of 1157560 is about 104.9980347327.

The spelling of 1157560 in words is "one million, one hundred fifty-seven thousand, five hundred sixty".