6857424555 has 16 divisors (see below), whose sum is σ = 11617284384. Its totient is φ = 3442158080.

The previous prime is 6857424529. The next prime is 6857424571. The reversal of 6857424555 is 5554247586.

It is not a de Polignac number, because 6857424555 - 2¹² = 6857420459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 6857424498 and 6857424507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13445676 + ... + 13446185.

It is an arithmetic number, because the mean of its divisors is an integer number (726080274).

Almost surely, 2^6857424555 is an apocalyptic number.

6857424555 is a deficient number, since it is larger than the sum of its proper divisors (4759859829).

6857424555 is a wasteful number, since it uses less digits than its factorization.

6857424555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891886.

The product of its digits is 6720000, while the sum is 51.

The square root of 6857424555 is about 82809.5680160210. The cubic root of 6857424555 is about 1899.8545184084.

The spelling of 6857424555 in words is "six billion, eight hundred fifty-seven million, four hundred twenty-four thousand, five hundred fifty-five".