5205161520 has 160 divisors (see below), whose sum is σ = 19308139200. Its totient is φ = 1281263616.

The previous prime is 5205161509. The next prime is 5205161531. The reversal of 5205161520 is 251615025.

5205161520 is a `hidden beast` number, since 5 + 20 + 5 + 1 + 615 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (5205161509) and next prime (5205161531).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64605 + ... + 120764.

It is an arithmetic number, because the mean of its divisors is an integer number (120675870).

Almost surely, 2^5205161520 is an apocalyptic number.

It is an amenable number.

5205161520 is an abundant number, since it is smaller than the sum of its proper divisors (14102977680).

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

5205161520 is a wasteful number, since it uses less digits than its factorization.

5205161520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185404 (or 185392 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 5205161520 is about 72146.8053346785. The cubic root of 5205161520 is about 1733.0512404178.

Adding to 5205161520 its reverse (251615025), we get a palindrome (5456776545).

The spelling of 5205161520 in words is "five billion, two hundred five million, one hundred sixty-one thousand, five hundred twenty".