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52451789031 = 343072109293
BaseRepresentation
bin110000110110010111…
…101100100011100111
312000101110021221220000
4300312113230203213
51324410124222111
640032423512343
73534542564505
oct606627544347
9160343257800
1052451789031
1120276738484
12a1b9bb86b3
134c3b9bc175
1427781d1675
15156ec4ac56
hexc365ec8e7

52451789031 has 20 divisors (see below), whose sum is σ = 78609168792. Its totient is φ = 34853941008.

The previous prime is 52451789029. The next prime is 52451789053. The reversal of 52451789031 is 13098715425.

52451789031 is a `hidden beast` number, since 5 + 24 + 517 + 89 + 0 + 31 = 666.

It is not a de Polignac number, because 52451789031 - 21 = 52451789029 is a prime.

It is a super-2 number, since 2×524517890312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52451789011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1029780 + ... + 1079513.

Almost surely, 252451789031 is an apocalyptic number.

52451789031 is a deficient number, since it is larger than the sum of its proper divisors (26157379761).

52451789031 is a wasteful number, since it uses less digits than its factorization.

52451789031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109612 (or 2109603 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 52451789031 in words is "fifty-two billion, four hundred fifty-one million, seven hundred eighty-nine thousand, thirty-one".

Divisors: 1 3 9 27 81 307 921 2763 8289 24867 2109293 6327879 18983637 56950911 170852733 647552951 1942658853 5827976559 17483929677 52451789031