5121520 has 20 divisors (see below), whose sum is σ = 11907720. Its totient is φ = 2048576.

The previous prime is 5121511. The next prime is 5121521. The reversal of 5121520 is 251215.

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

It is a super-2 number, since 2×5121520² = 52459934220800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 5121494 and 5121503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121521) 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 3 ways as a sum of consecutive naturals, for example, 31930 + ... + 32089.

It is an arithmetic number, because the mean of its divisors is an integer number (595386).

Almost surely, 2^5121520 is an apocalyptic number.

It is an amenable number.

5121520 is an abundant number, since it is smaller than the sum of its proper divisors (6786200).

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

5121520 is a wasteful number, since it uses less digits than its factorization.

5121520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64032 (or 64026 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 5121520 is about 2263.0775505934. The cubic root of 5121520 is about 172.3718294563.

Adding to 5121520 its reverse (251215), we get a palindrome (5372735).

The spelling of 5121520 in words is "five million, one hundred twenty-one thousand, five hundred twenty".