254155257051 has 4 divisors (see below), whose sum is σ = 338873676072. Its totient is φ = 169436838032.

The previous prime is 254155257047. The next prime is 254155257053. The reversal of 254155257051 is 150752551452.

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

It is a cyclic number.

It is not a de Polignac number, because 254155257051 - 2² = 254155257047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254155256994 and 254155257012.

It is not an unprimeable number, because it can be changed into a prime (254155257053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42359209506 + ... + 42359209511.

It is an arithmetic number, because the mean of its divisors is an integer number (84718419018).

Almost surely, 2^254155257051 is an apocalyptic number.

254155257051 is a deficient number, since it is larger than the sum of its proper divisors (84718419021).

254155257051 is an equidigital number, since it uses as much as digits as its factorization.

254155257051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84718419020.

The product of its (nonzero) digits is 350000, while the sum is 42.

The spelling of 254155257051 in words is "two hundred fifty-four billion, one hundred fifty-five million, two hundred fifty-seven thousand, fifty-one".