1455540 has 48 divisors (see below), whose sum is σ = 4318272. Its totient is φ = 365056.

The previous prime is 1455527. The next prime is 1455563. The reversal of 1455540 is 455541.

1455540 = T₁₆₄ + T₁₆₅ + ... + T₂₃₅.

It is a self number, because there is not a number n which added to its sum of digits gives 1455540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307 + ... + 1733.

It is an arithmetic number, because the mean of its divisors is an integer number (89964).

2^1455540 is an apocalyptic number.

1455540 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 1455540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159136).

1455540 is an abundant number, since it is smaller than the sum of its proper divisors (2862732).

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

1455540 is a wasteful number, since it uses less digits than its factorization.

1455540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 1455540 is about 1206.4576246185. The cubic root of 1455540 is about 113.3290848081.

Subtracting from 1455540 its reverse (455541), we obtain a palindrome (999999).

The spelling of 1455540 in words is "one million, four hundred fifty-five thousand, five hundred forty".