251058055 has 4 divisors (see below), whose sum is σ = 301269672. Its totient is φ = 200846440.

The previous prime is 251058029. The next prime is 251058079. The reversal of 251058055 is 550850152.

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

It is not a de Polignac number, because 251058055 - 2⁷ = 251057927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25105801 + ... + 25105810.

It is an arithmetic number, because the mean of its divisors is an integer number (75317418).

Almost surely, 2^251058055 is an apocalyptic number.

251058055 is a deficient number, since it is larger than the sum of its proper divisors (50211617).

251058055 is an equidigital number, since it uses as much as digits as its factorization.

251058055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50211616.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 251058055 is about 15844.8116113761. The cubic root of 251058055 is about 630.8479846585.

The spelling of 251058055 in words is "two hundred fifty-one million, fifty-eight thousand, fifty-five".