2555138706 has 8 divisors (see below), whose sum is σ = 5110277424. Its totient is φ = 851712900.

The previous prime is 2555138693. The next prime is 2555138713. The reversal of 2555138706 is 6078315552.

It is a sphenic number, since it is the product of 3 distinct primes.

2555138706 is an admirable number.

It is a Curzon 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, 212928220 + ... + 212928231.

It is an arithmetic number, because the mean of its divisors is an integer number (638784678).

Almost surely, 2^2555138706 is an apocalyptic number.

2555138706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2555138706 is a wasteful number, since it uses less digits than its factorization.

2555138706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425856456.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 2555138706 is about 50548.3798553425. The cubic root of 2555138706 is about 1367.1143028470.

The spelling of 2555138706 in words is "two billion, five hundred fifty-five million, one hundred thirty-eight thousand, seven hundred six".