5121469821 has 32 divisors (see below), whose sum is σ = 7521067008. Its totient is φ = 3080226240.

The previous prime is 5121469763. The next prime is 5121469831. The reversal of 5121469821 is 1289641215.

It is not a de Polignac number, because 5121469821 - 2¹⁰ = 5121468797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 5121469821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121469831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1668330 + ... + 1671396.

It is an arithmetic number, because the mean of its divisors is an integer number (235033344).

Almost surely, 2^5121469821 is an apocalyptic number.

It is an amenable number.

5121469821 is a deficient number, since it is larger than the sum of its proper divisors (2399597187).

5121469821 is a wasteful number, since it uses less digits than its factorization.

5121469821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041.

The product of its digits is 34560, while the sum is 39.

The square root of 5121469821 is about 71564.4452294573. The cubic root of 5121469821 is about 1723.7126650661.

The spelling of 5121469821 in words is "five billion, one hundred twenty-one million, four hundred sixty-nine thousand, eight hundred twenty-one".