854138555 has 4 divisors (see below), whose sum is σ = 1024966272. Its totient is φ = 683310840.

The previous prime is 854138543. The next prime is 854138563. The reversal of 854138555 is 555831458.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 854138555 - 2¹⁶ = 854073019 is a prime.

It is a super-2 number, since 2×854138555² = 1459105342274976050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85413851 + ... + 85413860.

It is an arithmetic number, because the mean of its divisors is an integer number (256241568).

Almost surely, 2^854138555 is an apocalyptic number.

854138555 is a deficient number, since it is larger than the sum of its proper divisors (170827717).

854138555 is a wasteful number, since it uses less digits than its factorization.

854138555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170827716.

The product of its digits is 480000, while the sum is 44.

The square root of 854138555 is about 29225.6489235055. The cubic root of 854138555 is about 948.8031298596.

The spelling of 854138555 in words is "eight hundred fifty-four million, one hundred thirty-eight thousand, five hundred fifty-five".