5091920 has 20 divisors (see below), whose sum is σ = 11838900. Its totient is φ = 2036736.

The previous prime is 5091899. The next prime is 5091923. The reversal of 5091920 is 291905.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1420864 + 3671056 = 1192^2 + 1916^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 5091920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5091923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31745 + ... + 31904.

It is an arithmetic number, because the mean of its divisors is an integer number (591945).

Almost surely, 2^5091920 is an apocalyptic number.

It is an amenable number.

5091920 is an abundant number, since it is smaller than the sum of its proper divisors (6746980).

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

5091920 is a wasteful number, since it uses less digits than its factorization.

5091920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63662 (or 63656 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 5091920 is about 2256.5283069352. The cubic root of 5091920 is about 172.0391113509.

The spelling of 5091920 in words is "five million, ninety-one thousand, nine hundred twenty".