1151580 has 48 divisors (see below), whose sum is σ = 3417120. Its totient is φ = 288768.

The previous prime is 1151569. The next prime is 1151581. The reversal of 1151580 is 851511.

1151580 is nontrivially palindromic in base 8.

It is a super-2 number, since 2×1151580² = 2652272992800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (71190).

2^1151580 is an apocalyptic number.

1151580 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 1151580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1708560).

1151580 is an abundant number, since it is smaller than the sum of its proper divisors (2265540).

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

1151580 is a wasteful number, since it uses less digits than its factorization.

1151580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

The square root of 1151580 is about 1073.1169554154. The cubic root of 1151580 is about 104.8169145047.

The spelling of 1151580 in words is "one million, one hundred fifty-one thousand, five hundred eighty".