5105517021 has 32 divisors (see below), whose sum is σ = 8306058240. Its totient is φ = 3073734000.

The previous prime is 5105517017. The next prime is 5105517031. The reversal of 5105517021 is 1207155015.

It is not a de Polignac number, because 5105517021 - 2² = 5105517017 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5105517031) 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, 12075 + ... + 101768.

It is an arithmetic number, because the mean of its divisors is an integer number (259564320).

Almost surely, 2^5105517021 is an apocalyptic number.

It is an amenable number.

5105517021 is a deficient number, since it is larger than the sum of its proper divisors (3200541219).

5105517021 is a wasteful number, since it uses less digits than its factorization.

5105517021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114014 (or 114008 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 5105517021 is about 71452.9007178855. The cubic root of 5105517021 is about 1721.9210801647.

The spelling of 5105517021 in words is "five billion, one hundred five million, five hundred seventeen thousand, twenty-one".