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54579401807 = 721113865343
BaseRepresentation
bin110010110101001011…
…111001010001001111
312012212201202212221012
4302311023321101033
51343234311324212
641023505555435
73641346155300
oct626513712117
9165781685835
1054579401807
1121168716447
12a6b2645b7b
1351ba727538
1428da9c87a7
151646919922
hexcb52f944f

54579401807 has 6 divisors (see below), whose sum is σ = 63490324608. Its totient is φ = 46782344364.

The previous prime is 54579401803. The next prime is 54579401837. The reversal of 54579401807 is 70810497545.

It is a happy number.

It is not a de Polignac number, because 54579401807 - 22 = 54579401803 is a prime.

It is a super-2 number, since 2×545794018072 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54579401801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556932623 + ... + 556932720.

It is an arithmetic number, because the mean of its divisors is an integer number (10581720768).

Almost surely, 254579401807 is an apocalyptic number.

54579401807 is a deficient number, since it is larger than the sum of its proper divisors (8910922801).

54579401807 is a wasteful number, since it uses less digits than its factorization.

54579401807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113865357 (or 1113865350 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 54579401807 in words is "fifty-four billion, five hundred seventy-nine million, four hundred one thousand, eight hundred seven".

Divisors: 1 7 49 1113865343 7797057401 54579401807