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250630055 = 51397127313
BaseRepresentation
bin11101111000001…
…00111110100111
3122110121022210122
432330010332213
51003130130210
640511512155
76132214604
oct1674047647
9573538718
10250630055
11119524085
126bb2865b
133cc03410
14254016ab
151700ab55
hexef04fa7

250630055 has 32 divisors (see below), whose sum is σ = 330860544. Its totient is φ = 181149696.

The previous prime is 250630033. The next prime is 250630063. The reversal of 250630055 is 550036052.

It is not a de Polignac number, because 250630055 - 216 = 250564519 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 31 ways as a sum of consecutive naturals, for example, 800579 + ... + 800891.

It is an arithmetic number, because the mean of its divisors is an integer number (10339392).

Almost surely, 2250630055 is an apocalyptic number.

250630055 is a deficient number, since it is larger than the sum of its proper divisors (80230489).

250630055 is a wasteful number, since it uses less digits than its factorization.

250630055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 250630055 is about 15831.2998518757. The cubic root of 250630055 is about 630.4892940292.

The spelling of 250630055 in words is "two hundred fifty million, six hundred thirty thousand, fifty-five".

Divisors: 1 5 13 65 97 127 313 485 635 1261 1565 1651 4069 6305 8255 12319 20345 30361 39751 61595 151805 160147 198755 394693 516763 800735 1973465 2583815 3855847 19279235 50126011 250630055