1151000 has 32 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 460000.

The previous prime is 1150987. The next prime is 1151021. The reversal of 1151000 is 1511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 425 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1151000 is an apocalyptic number.

1151000 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 1151000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347840).

1151000 is an abundant number, since it is smaller than the sum of its proper divisors (1544680).

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

1151000 is a wasteful number, since it uses less digits than its factorization.

1151000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 1151000 is about 1072.8466805653. The cubic root of 1151000 is about 104.7993143323.

Adding to 1151000 its reverse (1511), we get a palindrome (1152511).

The spelling of 1151000 in words is "one million, one hundred fifty-one thousand".