5105521420 has 24 divisors (see below), whose sum is σ = 10723003200. Its totient is φ = 2041940352.

The previous prime is 5105521411. The next prime is 5105521423. The reversal of 5105521420 is 241255015.

It is not an unprimeable number, because it can be changed into a prime (5105521423) 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, 222861 + ... + 244699.

It is an arithmetic number, because the mean of its divisors is an integer number (446791800).

Almost surely, 2^5105521420 is an apocalyptic number.

It is an amenable number.

5105521420 is an abundant number, since it is smaller than the sum of its proper divisors (5617481780).

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

5105521420 is a wasteful number, since it uses less digits than its factorization.

5105521420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33537 (or 33535 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 5105521420 is about 71452.9315003940. The cubic root of 5105521420 is about 1721.9215747100.

Adding to 5105521420 its reverse (241255015), we get a palindrome (5346776435).

The spelling of 5105521420 in words is "five billion, one hundred five million, five hundred twenty-one thousand, four hundred twenty".