5217860421 has 12 divisors (see below), whose sum is σ = 7539996672. Its totient is φ = 3477148776.

The previous prime is 5217860419. The next prime is 5217860423. The reversal of 5217860421 is 1240687125.

5217860421 is a `hidden beast` number, since 5 + 2 + 178 + 60 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (5217860419) and next prime (5217860423).

It is not a de Polignac number, because 5217860421 - 2¹ = 5217860419 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 (5217860423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95301 + ... + 139706.

It is an arithmetic number, because the mean of its divisors is an integer number (628333056).

Almost surely, 2^5217860421 is an apocalyptic number.

It is an amenable number.

5217860421 is a deficient number, since it is larger than the sum of its proper divisors (2322136251).

5217860421 is a wasteful number, since it uses less digits than its factorization.

5217860421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237480 (or 237477 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 5217860421 is about 72234.7590914513. The cubic root of 5217860421 is about 1734.4594562778.

The spelling of 5217860421 in words is "five billion, two hundred seventeen million, eight hundred sixty thousand, four hundred twenty-one".