4521040 has 40 divisors (see below), whose sum is σ = 10856448. Its totient is φ = 1749120.

The previous prime is 4521037. The next prime is 4521047. The reversal of 4521040 is 401254.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1569 + ... + 3391.

Almost surely, 2^4521040 is an apocalyptic number.

4521040 is a gapful number since it is divisible by the number (40) 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 4521040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5428224).

4521040 is an abundant number, since it is smaller than the sum of its proper divisors (6335408).

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

4521040 is a wasteful number, since it uses less digits than its factorization.

4521040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867 (or 1861 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4521040 is about 2126.2737359051. The cubic root of 4521040 is about 165.3532682056.

Adding to 4521040 its reverse (401254), we get a palindrome (4922294).

The spelling of 4521040 in words is "four million, five hundred twenty-one thousand, forty".