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55710109 = 7213194603
BaseRepresentation
bin1101010010000…
…1000110011101
310212211100220101
43110201012131
5103230210414
65310021101
71244346100
oct324410635
9125740811
1055710109
11294a0914
12167a7791
13b707480
147582737
154d56a74
hex352119d

55710109 has 24 divisors (see below), whose sum is σ = 73479840. Its totient is φ = 41749344.

The previous prime is 55710097. The next prime is 55710143. The reversal of 55710109 is 90101755.

It is not a de Polignac number, because 55710109 - 27 = 55709981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55713109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9802 + ... + 14404.

It is an arithmetic number, because the mean of its divisors is an integer number (3061660).

Almost surely, 255710109 is an apocalyptic number.

It is an amenable number.

55710109 is a deficient number, since it is larger than the sum of its proper divisors (17769731).

55710109 is a wasteful number, since it uses less digits than its factorization.

55710109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649 (or 4642 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 55710109 is about 7463.9204845711. The cubic root of 55710109 is about 381.9249256265.

The spelling of 55710109 in words is "fifty-five million, seven hundred ten thousand, one hundred nine".

Divisors: 1 7 13 19 49 91 133 247 637 931 1729 4603 12103 32221 59839 87457 225547 418873 612199 1136941 2932111 4285393 7958587 55710109