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55130039 = 197573833
BaseRepresentation
bin1101001001001…
…1011110110111
310211201220012022
43102103132313
5103103130124
65245343355
71236411656
oct322233667
9124656168
1055130039
1129135018
1216567b5b
13b563433
14747119d
154c8ec5e
hex34937b7

55130039 has 8 divisors (see below), whose sum is σ = 58123440. Its totient is φ = 52145856.

The previous prime is 55130003. The next prime is 55130051. The reversal of 55130039 is 93003155.

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 55130039 - 212 = 55125943 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 (55130239) 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, 12467 + ... + 16299.

It is an arithmetic number, because the mean of its divisors is an integer number (7265430).

Almost surely, 255130039 is an apocalyptic number.

55130039 is a deficient number, since it is larger than the sum of its proper divisors (2993401).

55130039 is a wasteful number, since it uses less digits than its factorization.

55130039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 55130039 is about 7424.9605386157. The cubic root of 55130039 is about 380.5947266203.

The spelling of 55130039 in words is "fifty-five million, one hundred thirty thousand, thirty-nine".

Divisors: 1 19 757 3833 14383 72827 2901581 55130039