5515820 has 24 divisors (see below), whose sum is σ = 12265344. Its totient is φ = 2076416.

The previous prime is 5515819. The next prime is 5515823. The reversal of 5515820 is 285155.

It is a self number, because there is not a number n which added to its sum of digits gives 5515820.

It is not an unprimeable number, because it can be changed into a prime (5515823) 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, 7772 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (511056).

Almost surely, 2^5515820 is an apocalyptic number.

It is an amenable number.

5515820 is an abundant number, since it is smaller than the sum of its proper divisors (6749524).

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

5515820 is a wasteful number, since it uses less digits than its factorization.

5515820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16249 (or 16247 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 5515820 is about 2348.5782933511. The cubic root of 5515820 is about 176.6864975168.

The spelling of 5515820 in words is "five million, five hundred fifteen thousand, eight hundred twenty".