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55664471 = 196773599
BaseRepresentation
bin1101010001010…
…1111101010111
310212202001022002
43110111331113
5103222230341
65305025515
71244066042
oct324257527
9125661262
1055664471
112946a5a5
121678529b
13b6bc775
14756dc59
154d4829b
hex3515f57

55664471 has 16 divisors (see below), whose sum is σ = 60384000. Its totient is φ = 51150528.

The previous prime is 55664461. The next prime is 55664473. The reversal of 55664471 is 17446655.

It is a cyclic number.

It is not a de Polignac number, because 55664471 - 26 = 55664407 is a prime.

It is a super-3 number, since 3×556644713 (a number of 24 digits) contains 333 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 (55664473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92630 + ... + 93228.

It is an arithmetic number, because the mean of its divisors is an integer number (3774000).

Almost surely, 255664471 is an apocalyptic number.

55664471 is a deficient number, since it is larger than the sum of its proper divisors (4719529).

55664471 is a wasteful number, since it uses less digits than its factorization.

55664471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its digits is 100800, while the sum is 38.

The square root of 55664471 is about 7460.8626176870. The cubic root of 55664471 is about 381.8206055316.

The spelling of 55664471 in words is "fifty-five million, six hundred sixty-four thousand, four hundred seventy-one".

Divisors: 1 19 67 73 599 1273 1387 4891 11381 40133 43727 92929 762527 830813 2929709 55664471