3545520 has 160 divisors (see below), whose sum is σ = 12856320. Its totient is φ = 798720.

The previous prime is 3545497. The next prime is 3545567. The reversal of 3545520 is 255453.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44841 + ... + 44919.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

Almost surely, 2^3545520 is an apocalyptic number.

3545520 is a gapful number since it is divisible by the number (30) 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 3545520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6428160).

3545520 is an abundant number, since it is smaller than the sum of its proper divisors (9310800).

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

3545520 is a wasteful number, since it uses less digits than its factorization.

3545520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 3545520 is about 1882.9551242661. The cubic root of 3545520 is about 152.4848323175.

The spelling of 3545520 in words is "three million, five hundred forty-five thousand, five hundred twenty".