1161500 has 48 divisors (see below), whose sum is σ = 2673216. Its totient is φ = 440000.

The previous prime is 1161499. The next prime is 1161509. The reversal of 1161500 is 51611.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161509) 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, 11450 + ... + 11550.

It is an arithmetic number, because the mean of its divisors is an integer number (55692).

2^1161500 is an apocalyptic number.

1161500 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 1161500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336608).

1161500 is an abundant number, since it is smaller than the sum of its proper divisors (1511716).

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

1161500 is a wasteful number, since it uses less digits than its factorization.

1161500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 1161500 is about 1077.7290939749. The cubic root of 1161500 is about 105.1170274931.

It can be divided in two parts, 1161 and 500, that added together give a palindrome (1661).

The spelling of 1161500 in words is "one million, one hundred sixty-one thousand, five hundred".