5115016021 has 2 divisors, whose sum is σ = 5115016022. Its totient is φ = 5115016020.

The previous prime is 5115016007. The next prime is 5115016037. The reversal of 5115016021 is 1206105115.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3309700900 + 1805315121 = 57530^2 + 42489^2 .

It is a cyclic number.

It is not a de Polignac number, because 5115016021 - 2¹¹ = 5115013973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5115015983 and 5115016001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5115017021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557508010 + 2557508011.

It is an arithmetic number, because the mean of its divisors is an integer number (2557508011).

Almost surely, 2^5115016021 is an apocalyptic number.

It is an amenable number.

5115016021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115016021 is an equidigital number, since it uses as much as digits as its factorization.

5115016021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 5115016021 is about 71519.3401885112. The cubic root of 5115016021 is about 1722.9883174803.

The spelling of 5115016021 in words is "five billion, one hundred fifteen million, sixteen thousand, twenty-one".