945520 has 40 divisors (see below), whose sum is σ = 2249856. Its totient is φ = 369408.

The previous prime is 945481. The next prime is 945521. The reversal of 945520 is 25549.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4129 + ... + 4351.

2⁹⁴⁵⁵²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 945520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124928).

945520 is an abundant number, since it is smaller than the sum of its proper divisors (1304336).

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

945520 is a wasteful number, since it uses less digits than its factorization.

945520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 945520 is about 972.3785271179. The cubic root of 945520 is about 98.1499855235.

The spelling of 945520 in words is "nine hundred forty-five thousand, five hundred twenty".