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47000137 = 228720551
BaseRepresentation
bin1011001101001…
…0101001001001
310021102212001211
42303102221021
544013001022
64355213121
71110331432
oct263225111
9107385054
1047000137
1124591998
12138a71a1
139977b42
146356489
1541d5e77
hex2cd2a49

47000137 has 4 divisors (see below), whose sum is σ = 47022976. Its totient is φ = 46977300.

The previous prime is 47000117. The next prime is 47000143. The reversal of 47000137 is 73100074.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73100074 = 236550037.

It is a cyclic number.

It is not a de Polignac number, because 47000137 - 211 = 46998089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47000117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7989 + ... + 12562.

It is an arithmetic number, because the mean of its divisors is an integer number (11755744).

Almost surely, 247000137 is an apocalyptic number.

It is an amenable number.

47000137 is a deficient number, since it is larger than the sum of its proper divisors (22839).

47000137 is a wasteful number, since it uses less digits than its factorization.

47000137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22838.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 47000137 is about 6855.6645921457. The cubic root of 47000137 is about 360.8829586583.

The spelling of 47000137 in words is "forty-seven million, one hundred thirty-seven", and thus it is an aban number.

Divisors: 1 2287 20551 47000137