2506055857 has 4 divisors (see below), whose sum is σ = 2548531440. Its totient is φ = 2463580276.

The previous prime is 2506055837. The next prime is 2506055879. The reversal of 2506055857 is 7585506052.

2506055857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2506055857 - 2⁷ = 2506055729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506055837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21237703 + ... + 21237820.

It is an arithmetic number, because the mean of its divisors is an integer number (637132860).

Almost surely, 2^2506055857 is an apocalyptic number.

It is an amenable number.

2506055857 is a deficient number, since it is larger than the sum of its proper divisors (42475583).

2506055857 is an equidigital number, since it uses as much as digits as its factorization.

2506055857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42475582.

The product of its (nonzero) digits is 420000, while the sum is 43.

The square root of 2506055857 is about 50060.5219409466. The cubic root of 2506055857 is about 1358.3037996197.

The spelling of 2506055857 in words is "two billion, five hundred six million, fifty-five thousand, eight hundred fifty-seven".