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252752802997 = 1721137739621
BaseRepresentation
bin1110101101100100111…
…1011011010010110101
3220011101202222201220211
43223121033123102311
513120114204143442
6312040225425421
724155310243322
oct3533117332265
9804352881824
10252752802997
1198212405952
1240b9a49b271
131aab04a27c6
14c33a26bb49
15689482e617
hex3ad93db4b5

252752802997 has 12 divisors (see below), whose sum is σ = 270871290756. Its totient is φ = 235779783680.

The previous prime is 252752802989. The next prime is 252752803001. The reversal of 252752802997 is 799208257252.

It can be written as a sum of positive squares in 6 ways, for example, as 10249740081 + 242503062916 = 101241^2 + 492446^2 .

It is not a de Polignac number, because 252752802997 - 23 = 252752802989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252752802937) 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 11 ways as a sum of consecutive naturals, for example, 3837154 + ... + 3902467.

It is an arithmetic number, because the mean of its divisors is an integer number (22572607563).

Almost surely, 2252752802997 is an apocalyptic number.

It is an amenable number.

252752802997 is a deficient number, since it is larger than the sum of its proper divisors (18118487759).

252752802997 is a wasteful number, since it uses less digits than its factorization.

252752802997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7739768 (or 7739751 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 252752802997 in words is "two hundred fifty-two billion, seven hundred fifty-two million, eight hundred two thousand, nine hundred ninety-seven".

Divisors: 1 17 113 289 1921 32657 7739621 131573557 874577173 2236750469 14867811941 252752802997