5155200021 has 16 divisors (see below), whose sum is σ = 6974398080. Its totient is φ = 3386456640.

The previous prime is 5155199983. The next prime is 5155200049. The reversal of 5155200021 is 1200025515.

It is not a de Polignac number, because 5155200021 - 2¹⁵ = 5155167253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155200091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431395 + ... + 443183.

It is an arithmetic number, because the mean of its divisors is an integer number (435899880).

Almost surely, 2^5155200021 is an apocalyptic number.

It is an amenable number.

5155200021 is a deficient number, since it is larger than the sum of its proper divisors (1819198059).

5155200021 is a wasteful number, since it uses less digits than its factorization.

5155200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13916.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 5155200021 is about 71799.7215941678. The cubic root of 5155200021 is about 1727.4885340994.

Adding to 5155200021 its reverse (1200025515), we get a palindrome (6355225536).

The spelling of 5155200021 in words is "five billion, one hundred fifty-five million, two hundred thousand, twenty-one".