251350055 has 8 divisors (see below), whose sum is σ = 329040144. Its totient is φ = 182800000.

The previous prime is 251350039. The next prime is 251350067. The reversal of 251350055 is 550053152.

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

It is not a de Polignac number, because 251350055 - 2⁴ = 251350039 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2284946 + ... + 2285055.

It is an arithmetic number, because the mean of its divisors is an integer number (41130018).

Almost surely, 2^251350055 is an apocalyptic number.

251350055 is a deficient number, since it is larger than the sum of its proper divisors (77690089).

251350055 is a wasteful number, since it uses less digits than its factorization.

251350055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570017.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 251350055 is about 15854.0233064040. The cubic root of 251350055 is about 631.0924649530.

The spelling of 251350055 in words is "two hundred fifty-one million, three hundred fifty thousand, fifty-five".