1145540 has 48 divisors (see below), whose sum is σ = 2709504. Its totient is φ = 403200.

The previous prime is 1145539. The next prime is 1145593. The reversal of 1145540 is 455411.

1145540 is nontrivially palindromic in base 3.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8957 + ... + 9083.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2^1145540 is an apocalyptic number.

1145540 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 1145540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354752).

1145540 is an abundant number, since it is smaller than the sum of its proper divisors (1563964).

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

1145540 is a wasteful number, since it uses less digits than its factorization.

1145540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1145540 is about 1070.2990236378. The cubic root of 1145540 is about 104.6333394012.

It can be divided in two parts, 1 and 145540, that added together give a palindrome (145541).

The spelling of 1145540 in words is "one million, one hundred forty-five thousand, five hundred forty".