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251053012 = 2278966179
BaseRepresentation
bin11101111011011…
…00001111010100
3122111101210222201
432331230033110
51003232144022
640524534244
76135625660
oct1675541724
9574353881
10251053012
11119792931
12700b1384
1340020aa2
14254b18a0
1517091127
hexef6c3d4

251053012 has 12 divisors (see below), whose sum is σ = 502106080. Its totient is φ = 107594136.

The previous prime is 251053007. The next prime is 251053031. The reversal of 251053012 is 210350152.

251053012 is an admirable number.

It is a super-2 number, since 2×2510530122 = 126055229668544288, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4483062 + ... + 4483117.

Almost surely, 2251053012 is an apocalyptic number.

It is an amenable number.

251053012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251053012 is a wasteful number, since it uses less digits than its factorization.

251053012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8966190 (or 8966188 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 251053012 is about 15844.6524733110. The cubic root of 251053012 is about 630.8437606850.

The spelling of 251053012 in words is "two hundred fifty-one million, fifty-three thousand, twelve".

Divisors: 1 2 4 7 14 28 8966179 17932358 35864716 62763253 125526506 251053012