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54172868677 = 1812729109673
BaseRepresentation
bin110010011100111101…
…000110000001000101
312011211101210212022121
4302130331012001011
51341421223244202
640515304325541
73625311533434
oct623475060105
9164741725277
1054172868677
1120a7a199054
12a5ba4738b1
1351544393a5
14289ca0311b
151620db5537
hexc9cf46045

54172868677 has 8 divisors (see below), whose sum is σ = 54492623640. Its totient is φ = 53853338880.

The previous prime is 54172868653. The next prime is 54172868689. The reversal of 54172868677 is 77686827145.

It can be written as a sum of positive squares in 4 ways, for example, as 2054718241 + 52118150436 = 45329^2 + 228294^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54172868677 - 27 = 54172868549 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 (54172868777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439113 + ... + 548785.

It is an arithmetic number, because the mean of its divisors is an integer number (6811577955).

Almost surely, 254172868677 is an apocalyptic number.

It is an amenable number.

54172868677 is a deficient number, since it is larger than the sum of its proper divisors (319754963).

54172868677 is a wasteful number, since it uses less digits than its factorization.

54172868677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112583.

The product of its digits is 31610880, while the sum is 61.

The spelling of 54172868677 in words is "fifty-four billion, one hundred seventy-two million, eight hundred sixty-eight thousand, six hundred seventy-seven".

Divisors: 1 181 2729 109673 493949 19850813 299297617 54172868677